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Assessing the risk factors for cytomegalovirus and prediction the relationship between abortion and virus in Kirkuk City Hospitals

    Salwa Hazim Ghailan Samira Shokir Mohammed

Mosul Journal of Nursing, 2020, Volume 8, Issue 2, Pages 127-141
10.33899/mjn.2020.166078

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Abstract

Background: Cytomegalovirus belongs to the Herpesviridae family of subfamily Betahrpesvirnae. CMV is one of the major causes of perinatal and congenital viral infection. Also can cause spontaneous abortion in pregnant women in the first trimester of gestation.
Objective: To identify the relationship between CMV and women’s demographic variables of age, parity, occupation, residence and socioeconomic status etc. To determine the prevalence rate of CMV in aborted women in the 1st trimester. To assess the relationship between abortion and CMV. To determine anti CMV IgM and IgG in women after abortion. To find out the consequences of risk factorsof CMV on fetus and maternal.
Methodology: A descriptive correlational design was used in this study. Data were collected from three maternity hospitals in Kirkuk city. A convenience sample of (100) aborted women in the first trimester of gestation were selected in this study, who were admitted in maternity hospitals. A questionnaire designed about assess the risk factors for cytomegalovirus and prediction the relationship between abortion and virus. Assessment tool was constructed by the researcher after extensive review of previous studies and relevant literature. The study instrument consists of two main parts; part one was Demographic data for. And the part two include (Test result and Risk factors for cytomegalovirus on pregnant women). The data were
described statistically and analyzed through the use of descriptive and inferential statistical analysis procedures
Results: The prevalence rate of CMV IgG seropositivity was reported (37%), while the prevalence rate of CMV IgM seropositive results was lower (1%). The majority of the study sample was within middle age group (26 – 36 years, live in urban areas, housewives, Barely
Sufficient economic status and Consanguineous). There is significant correlation of CMV and (abortion, stillbirths, Age at Menarche, Regularity of Menstrual Cycle, Age at Married, Interval between last pregnancy & present Pregnancy, Causes of Abortion, Number of Para,
Type of Previous Delivery to Present Delivery, IgG & IgM Test Results).
Conclusion: CMVI showed significant effects on the abortion rates among pregnant women in the first trimester of gestation. In this study the socio-economic status of the tested women has no significant effects on the rates of anti-CMV IgG and IgM seropositive results.
 Keywords: Cytomegalovirus, prevalence rate of CMV, anti-CMV IgG and IgM, risk factors of CMV
Keywords:
    Cytomegalovirus prevalence rate of CMV anti-CMV IgG and IgM risk factors of CMV

Assessing the risk factors for cytomegalovirus and prediction the relationship between abortion and virus in Kirkuk City Hospitals

Salwa H. AL-Mukhtar[1]                                            Samira Sh. Mohammed[2]

Abstract

Background: Cytomegalovirus belongs to the Herpesviridae family of subfamily Betahrpesvirnae. CMV is one of the major causes of perinatal and congenital viral infection. Also can cause spontaneous abortion in pregnant women in the first trimester of gestation.

Objective: To identify the relationship between CMV and women’s demographic variables of age, parity, occupation, residence and socioeconomic status etc. To determine the prevalence rate of CMV in aborted women in the 1st trimester. To assess the relationship between abortion and CMV. To determine anti CMV IgM and IgG in women after abortion. To find out the consequences of risk factorsof CMV on fetus and maternal.

Methodology: A descriptive correlational design was used in this study. Data were collected from three maternity hospitals in Kirkuk city. A convenience sample of (100) aborted women in the first trimester of gestation were selected in this study, who were admitted in maternity hospitals. A questionnaire designed about assess the risk factors for cytomegalovirus and prediction the relationship between abortion and virus. Assessment tool was constructed by the researcher after extensive review of previous studies and relevant literature. The study instrument consists of two main parts; part one was Demographic data for. And the part two include (Test result and Risk factors for cytomegalovirus on pregnant women). The data were

described statistically and analyzed through the use of descriptive and inferential statistical analysis procedures

Results: The prevalence rate of CMV IgG seropositivity was reported (37%), while the prevalence rate of CMV IgM seropositive results was lower (1%). The majority of the study sample was within middle age group (26 – 36 years, live in urban areas, housewives, Barely

Sufficient economic status and Consanguineous). There is significant correlation of CMV and (abortion, stillbirths, Age at Menarche, Regularity of Menstrual Cycle, Age at Married, Interval between last pregnancy & present Pregnancy, Causes of Abortion, Number of Para,

Type of Previous Delivery to Present Delivery, IgG & IgM Test Results).

Conclusion: CMVI showed significant effects on the abortion rates among pregnant women in the first trimester of gestation. In this study the socio-economic status of the tested women has no significant effects on the rates of anti-CMV IgG and IgM seropositive results.

 Keywords: Cytomegalovirus, prevalence rate of CMV, anti-CMV IgG and IgM, risk factors of CMV.  

Introduction   

Cytomegalovirus (CMV) belongs to the Herpesviridae family of subfamily Betahrpesvirnae. It is also called Human Herpes Viruses type 5 (HHV-5) according to (ICD) International Classification of Diseases. Cytomegalovirus can maintain hidden inside the body for a long time. Cytomegalovirus energizing is associated with hormonal changes and
immunosuppression (Andrievskaya et al., 2015). Human Cytomegalovirus (HCMV) causes the first typical infection of the Betaherpesvirinae subfamily (Yeroh et al., 2015).
CMV similar to all of the other herpes viruses founds hiding inside the human host. Primary HCMVI results in a latent or persistent contagious that can be found within endothelial cells, different tissues, and (PBMCs) peripheral blood mononuclear cells. The majority of babies would have a subclinical infection (O'Connor & Murphy, 2012). Reactivation of hidden cytomegalovirus outcomes in at least negative results as initial infections. Placenta infection with the movement of trans-placenta of cytomegalovirus across the interface of
materno-fetal and is a pre-requisite to infection the fetus. While CMV infection also can be limited to the placenta and there is rising guide that indirect impacts cytomegalovirus infection of placenta contributes to negative pregnancy result (Hamilton et al., 2012).
At first cytomegalovirus infection occurs in the seronegative defenseless host and the frequent exposure reasons reactivation of inactive (contamination or re-infection) in a seropositive in immune host Seropositive of recurrence cytomegalovirus was higher among people with lower socioeconomic status (Al-musaw, 2018). The CMV may result from primary or recurrence cytomegalovirus illness. While the recurrence cytomegalovirus is the most common cause for an extreme disease which increases with age and higher in the developed countries among lower financial strata (Hamid et al.,2014; Schoenfisch et al., 2011). The involuntary loss of pregnancy from conception to twenty-four weeks of pregnancy is called a miscarriage. Cytomegalovirus is caused by spontaneous abortion in more than 70% of abortion fettles (Jihad et al., 2015). The clinical manifestations range of cytomegalovirus from
asymptomatic about (90%) of cases to more severe fetal damage and in uncommon cases, CMV causes death due to abortion. CMV can be lifethreatening of all persons suffering from immune-compromised such as organ transplant recipients, newborn infants, and Human Immune Virus-infected persons (Zhou et al., 2015). CMV can be done in several methods: directly from ascending CMVI or by direct contact the newborn baby during labor with the
infected mucus of cervical and by infected tissue of a placenta. Transmission of contagion is possible after delivery through breastfeeding of the baby or by contacting the secretions of the mother's body containing cytomegalovirus. The infections of CMV are not high.
CMV predisposition in households and its spread among young children in the centers of daycare. The susceptibility rate of cytomegalovirus during childbearing age is well established. Among pregnant women between 40-80 % will be cytomegalovirus susceptible at the beginning of childbearing age. The susceptibility rate of CMV differs by racial or ethnic, age groups, and socioeconomic status (Gao et al., 2018; Revello et al., 2015). Intracellular continuous contributes to the virus to the long hiding of infection. The location of the intracellular protects the CMV from the act of determining antibodies. The changes in the humoral immunity combination with childbearing age depending on the repetition of CMVI
and gestational age (Andrievskaya et al., 2015). The congenital of CMVI appear as a non-primary infection, primary infection with CMV a new strain, or reactivation of a hidden infection (Gaur et al., 2020). The infection of fetal and risk of associated harms is higher after the initial infection. The fetal contiguous risk is greatest with maternal initial CMVI and much less with frequent infection as the CMV stays hidden after primary infection in the host cell. CMV perhaps shed in the fluids of the body in any person infected with this virus CMV can be found in breast milk, saliva, tears, and semen (Abdul Wahab et al., 2012).
During childbearing age at any time, non-primary or primary contagious of maternal (including reinfection or reactivation with a various cytomegalovirus strain) CMV can cross the placenta and cause infecting the fetal that leading to congenital cytomegalovirus infection. In the USA, approximately 1 quarter of congenital CMVIs was ascribable to primary contiguous of maternal and 3 quarter were ascribable to nonprimary contiguous of maternal (Wang et al., 2011).
Also, the initial infection shows to be more probable to reason symptoms at birth and long-term inability than non-primary infection of maternal. Berger et al. reported 2 cases of an acute initial CMVI with no symptoms of the disease that was found in the child and mother and a frequent CMVI that perform to encephalitis cytomegalovirus necrotizing
in the fetus (Berger et al.,2011). During primary maternal cytomegalovirus occurs increment in placental volume because enlarges in placental vasculature to compensate the fetus. The beneficial effect of antibodies perhaps mediated through the enhanced function of the placenta and improved nutrition and supplies oxygen to the fetus. Thus, it has been lately hyper-immunoglobulin therapy observed for CMVI is help to reduce the size and fetal ultrasound abnormality and inflammation of the placenta (Akunaeziri, 2018).              

 

Objectives of Study                              
-To identify the relationship between CMV and women’s
demographic variables of age, parity, occupation, residence and socioeconomic status etc.
-To determine the prevalence rate of CMV in aborted women in the 1st

 

 trimester.
-To assess the relationship between abortion and CMV
-To determine anti CMV IgM and IgG in women after abortion
-To find out the consequences of risk factors of CMV on fetus and
maternal.

 

METHODS AND MATERIALS

Study design and setting

A design of this study was descriptive correlational study conducted for aborted women whom pregnant loss. The setting of study in Kirkuk City hospitals (General Kirkuk hospital, Azadi Teaching Hospital, Al-Nasr Hospital) was the designated site for data collection.

Study sample

 A sample of (100) women was selected in this study. Those women with pregnant loss (abortion) who were admitted in maternity hospitals.Collected data and blood sampling after abortion occurs by curettage or spontaneous abortion. The study sample included (43) participants from Al-Nasr Hospital, (26) participants from Azadi Teaching Hospital and (31) participants from General Kirkuk hospital.

 Data collection

Data collected by using a self-reported questionnaire; except for women who were unable to read and write and those who cannot sit to write because of their health status, for those women a structured interview was used to collect data. The data were collected after obtaining the agreement from women to participate in the study through interview and informed them about the study objectives this was done written and orally by the researcher, the data were collected after approximately from (1-2) hours of abortion in general and private wards at the maternity hospitals in Kirkuk
city.

Blood Sampling collection

Blood samples were collected from aborted women under highly aseptic conditions about (Five ml) blood samples were obtained by vein
puncture from all studied women after cleaning the skin. Blood samples were incubated to clot, after that were centrifuged at (3000 rpm) for 5 minutes. The serum was collected in sterile containers and stored at (-20°C) until tested. Samples were examined for IgM and IgG antibodies using ELISA test.

Statistical Analysis

 The data summarized and analyzed through using application statistical package for social science (SPSS) version 21 and the following
procedures used in Data Analysis: Descriptive data analysis approach frequency distribution, percentage, means, standard deviations, Independent Sample t-test and Analysis of Variance (ANOVA) test.

 RESULTS

This chapter presents the findings of the data analysis systematically in tables and these correspond with the objectives of the study as follows:Table (4-1) shows that more than half of sample (59%) were their age are between 26 – 36 years old, and who living in urban area are (64%), regarding to the educational level; were preliminary graduated and college graduated (22%) are more than other levels, based on the employment status, Housewife are the higher proportion (72%) of the study sample, according to the family income; barely sufficient makes a third of the sample about (43%) and the same percentage (43%) to whom have own house at house property, based on consanguinity, Consanguineous degree made about two thirds (60%) of the study sample, while 2nd degree of
consanguinity is a greater percentage (42%) more than 1st degree.Table (4-2): about the reproductive variables, shows that near to the
half of sample (45%) was their age of menarche at 13-14 years, while higher percentage of the sample (74%) was their age of marriage at 16–26 years, regarding to the Regularity of Menstrual Cycle, regular cycle period was (59%) are more than irregular. About half of the sample (51%) their age at 1st pregnancy is between 16-22 years, according to the period of interval between last pregnancy and present pregnancy, who have less than one year are (38%) more than others, the sample that not attending the health center are (73%) more than who attending, so the percentage is same in the type of follow-up to health center. The sample that attending the
external specialist clinic are (60%) more than who attending, and the percentage is (34%) of them have irregular follow-up based on the type of  follow-up to external specialist clinic, regarding to the current abortion in weeks, more than third sample size (36%) are between 10-15 weeks.Majority proportion (71%) of the sample when the causes of the abortion are diagnosed and higher percentage (38%) of these causes is CMV and (28%) are unknown causes. According to the last age of pregnancy, less than 20 weeks made near to the half of the sample (41%). an according to the number of gravida, (1-2) gravida makes (37%) of the sample, the same
number (1-2) makes (48%) according to the number of para, while regarding to the number of abortion, (67%) of the sample who have one abortion, but according to the number of stillbirths, higher percentage (88%) is who have no stillbirth, the majority of the study sample (48%%) that have no Previous delivery to the present delivery, while based on the type of previous deliveries, NVD made (58%) of sample is higher than other types. Finally, the date of the test results periods is between 15/12/2019 – 7/3/2020.Table (4-3): This table shows the distribution of the women's knowledge Scores (sample responses) regarding to all risk factors items. So, as shown; the responses of the study sample range from the matter (yes) meaning have a risk factor and the matter (no) means don't have a risk, and the matter (not sure) means the woman not sure 100% of some risk factors.Table (4-4) shows the number of those women who participated in the present study and suffering of risk factors. As shown the higher percentage (29%) is in 1st degree to women who had no risk factors, then (20%) in 2nd degree who had two risk factors.

Table (4-5) shows the types of the test and its results, majority proportion (62%) is who have negative results, while the positive result in IgG type is higher percentage (37%) was more than positive in IgM that had (1%) only.                      

Table (4-1): Distribution of the Demographic Data Characteristics of the Study Sample–Part I (No.: 100).

The Characteristics

Subgroups

f.

%

 

 

Age Groups

15 – 25 years

22

22

26 – 36 years

59

59

37 – 47 years + more

19

19

Mean + S.D.

1.97 + .643

 

 

Residence

Urban

64

64

Rural

30

30

Suburban

6

6

 

 

 

 

 

Education Level

Illiterate

7

7

Read and Write

16

16

Preliminary Graduated

22

22

Intermediate Graduated

8

8

Preparatory Graduated

7

7

Institute Graduated

13

13

College Graduated

22

22

Higher Studies

5

5

 

 

Employment Status

House wife

72

72

Free Lancer

6

6

Student

5

5

Government Employee

17

17

Family Monthly Income

Sufficient

38

38

Barely Sufficient

43

43

Insufficient

19

19

 

House Property

Owns

43

43

Rented

29

29

Shared

26

26

Other

2

2

Consanguinity

Non Consanguineous

40

40

Consanguineous

60

60

Type of Consanguinity

Non Consanguineous

40

40

1st Degree

18

18

2nd Degree

42

42

 

Table (4-2): Distribution of the Reproductive Data Characteristics of the Study Sample–Part II (No.: 100).

The Characteristics

Subgroups

f.

%

 

 

Age of Menarche

11 – 12 years

39

39

13 – 14 years

45

45

15 – 16 years

16

16

Mean + S.D.

1.77 + 0.709

Regularity of Menstrual Cycle

Regular

59

59

Irregular

41

41

 

Age at Married

13 – 19 years

25

25

20 – 26 years

74

74

27 – 33 years

1

1

Mean + S.D.

1.76 + .452

 

 

Age at 1st pregnancy

16 – 22 years

51

51

23 – 29 years

46

46

30 – 37 years

3

3

Mean + S.D.

1.52 + .559

 

Interval between last pregnancy & this Pregnancy

< 1 year

38

38

1 – 2 years

36

36

> 2 years

16

16

None

10

10

Mean + S.D.

1.98 + .974

Follow-up pregnancy in Health Center

Yes

27

27

No

73

73

Type of Follow-up in Health Center

No Follow-up

73

73

Follow-up Regularly

11

11

Follow-up Irregularly

16

16

Follow-up pregnancy in External Specialist Clinic

Yes

60

60

No

40

40

Type of Follow-up in External Specialist Clinic

No Follow-up

40

40

Follow-up Regularly

26

26

Follow-up Irregularly

34

34

 

 

Current Abortion

< 4 Weeks

6

6

4 – 9 Weeks

34

34

10 – 15 Weeks

36

36

16 – 20 Weeks

24

24

Was the Cause of Abortion Diagnosed

Yes

71

71

No

29

29

 

 

 

 

Causes of Abortion

Unknown

28

28

CMV

38

38

Toxoplasmosis

3

3

Rubella

3

3

Coagulation of Placenta

7

7

Heavy Lifting

6

6

Obesity

1

1

Deformation of the Uterus

3

3

H. mole Pregnancy

2

2

Ovarian Cysts

8

8

Exposure to Psychological Disorders

1

1

 

 

Last Age of Pregnancy in Weeks

≤ 20 Weeks

41

41

36 – 37 Weeks

26

26

38 – 39 Weeks

23

23

None

10

10

Mean + S.D.

2.02 + 1.025

 

 

Number of Gravida

1 – 2 Gravida

37

37

3 – 4 Gravida

33

33

5 – 6 Gravida

20

20

7 – 8 Gravida

8

8

9 – 10 Gravida

2

2

 

 

Number of Para

1 – 2 Para

48

48

3 – 4 Para

18

18

5 – 6 Para

10

10

7 – 8 Para

4

4

None

20

20

 

 

Number of Abortions

None

0

0

1 Abortion

67

67

2 Abortions

26

26

3 Abortions

4

4

4 Abortions

3

3

Number of Stillbirths

None

88

88

1 Stillbirth

12

12

Type of Previous Delivery to Present Delivery

NVD

40

40

C/S

12

12

None

48

48

 

Type of Previous Deliveries

NVD

58

58

C/S

8

8

Both

23

23

None

11

11

Date of Test Results

15/12/2019 – 7/3/2020

100

100

 

Table (4-3): Distribution of the Women's Knowledge Responses Regarding to All Items about the Risk Factors.

Knowledge Items about the Risk Factors

Sample Responses

No

Yes

Not sure

f.

%

f.

%

f.

%

1- You Smoking cigarettes less than 20 cigarettes

99

99

1

1

0

0

2- You Smoking cigarettes more than 20 cigarettes

99

99

1

1

-

-

3- You Smoking Hookah

100

100

-

-

-

-

4- Your husband Smoking less than 20 cigarettes

59

59

41

41

-

-

5-Your husband Smoking more than 20 cigarettes

60

60

40

40

-

-

6- Your husband Smoking Hookah

81

81

19

19

 

 

7- Test result IgG Positive (+ve)

63

63

-

-

37

37

8- You underwent CMV test during pregnancy

62

62

38

38

-

-

9- Drink alcoholic beverages

100

100

-

-

-

-

10- You suffer from viral hepatitis

97

97

3

3

 

 

11- You suffer from AIDS

100

100

-

-

-

-

12- You suffer from anemia

89

89

11

11

 

 

13- Your husband is married to an infected second wife

89

89

-

-

11

11

14- Your husband is infected with CMV

97

97

-

-

3

3

15- You have a child with CMV

98

98

-

-

2

2

16- The presence of sexual diseases in your husband, such as (AIDS, syphilis and wart)

100

100

-

-

-

-

17- You suffer from cancer

100

100

-

-

-

-

18- You are taking immunosuppressive drugs

100

100

-

-

-

-

19- You had previous surgical operations

80

80

20

20

 

 

20- You had an organ transplant previously

100

100

-

-

-

-

 

Table (4-4) Distribution the Number of Risk Factors to those Women who suffering it as a total.

Number of Risk Factors

f.

%

Women had (No) Risk Factor

29

29

Women had (One) Risk Factor

16

16

Women had (Two) Risk Factors

20

20

Women had (Three) Risk Factors

16

16

Women had (Four) Risk Factors

10

10

Women had (Five) Risk Factors

5

5

Women had (Six) Risk Factors

2

2

Women had (Seven) Risk Factors

2

2

Total

100

100

 

Table (4-5) Distribution of the IgG and IgM Test Type and Results among Study Sample.

Test Type

The Result

f.

%

Mean

S. D.

IgG

Positive

37

37

 

 

0.39

 

 

0.510

IgM

Positive

1

1

Negative

62

62

Total

100

100


Discussion
Distribution of the Demographic Data Characteristics of the Study Sample. Table (4-1):

Age groups: The mean and S.D. is 1.97 + .643; more than half of sample (59%) were their age are between (26 – 36) years old, this result is consistent with that obtained by Willame et al., (2015) who stated that the age of their study
sample was (26-35) years. 

Residency:The majority of subject reported that they live in urban areas (64%), these result is consistent approximately with Alghalibi et al., (2016) who stated of their study sample that they live in urban areas was (71,1%).

Level of Education: Concerning the level of education; were preliminarily graduated and college graduated (22%) are more than other levels. This finding is higher than that obtained by Ali, (2020) who reported that the level of education Primary school level was (12.5 %). Aljumaili et al., (2014) reported the high prevalence the level of education was Primary school. 

Employment Status:The employment status, Housewife is the higher proportion (72%) of the study sample this result agrees with the study done by Mamuye et al., (2015) who indicate that the majority of the study sample was a housewife (66.5%). 

Family Monthly: According to the family income; barely sufficient makes a third of the
sample about (43%), this result is consistent with that obtained by Wizman
et al., (2016) was middle (48%). 

House Property: About (43%) to whom have own house at house property this result is inconsistent with Demmler (1991) who stated in his study the high rate of house property was rent house. 

Consanguinity: Consanguineous degree made about two thirds (60%) of the study sample, while the 2nd degree of consanguinity is a greater percentage  (42%) more than 1st degree. This result is higher than that reported by
Karatas et al., (2008) was18% Consanguineous.
Distribution of the Reproductive Data Characteristics of the Study Sample Table (4-2):
·Age of Menarche

The menarche age mean and S.D. were (1.77 + .709) that near to the half of sample (45%) was their age of menarche at 13-14 years, these result consistent with Firth & Hurst (2017) who reported the menarche age was
(13) years in their studies.
·Regularity of Menstrual Cycle

Regarding the Regularity of the Menstrual Cycle, regular cycle period was (59%) are more than irregular. These studies were inconsistent with Mostad et al., (2000) who reported in his study irregular menstrual
cycle.

  • ·Age at Married

A higher percentage of the sample (74%) was their age of marriage at 16–26 years, Mean + S.D. (1.76 + .452), according to the study of Iraqi  CSO (2011) recommended that the mean age for marriage was 22 years old.

  • ·Age at 1st pregnancy

The Mean + S.D. of the sample their age at 1st pregnancy is (1.52 + .559). About half of the sample (51%) of their age at 1st pregnancy is between (16-22) years, according to the study of Iraqi CSO (2011) reported that only (14.3%) was starting their reproductive life at (15-19) years old.

  • ·Interval between last pregnancy & this Pregnancy

According to the period of interval between last pregnancy and present pregnancy, who have less than one year are (38%) more than
others, according to the study of Iraqi CSO (2011) reported that 25% of women need for family planning for regulating the intervals between pregnancies for two years and more.

  • ·Follow-up pregnancy in Health Center

The sample that not attending the health center is (73%) more than those attending, so the percentage is the same in the type of follow-up to the health center (no follow-up) and only (27%) follow-up pregnancy in the health center. These studies were consistent with Willame et al., (2015) who reported only (10.5%) follow-up pregnancy in the health center. 

  • ·Follow-up pregnancy in External Specialist Clinic

The sample that attending the external specialist clinic is (60%) more than who attending and the percentage is (34%) of them have irregular follow-up based on the type of follow-up to an external specialist clinic, these studies consist with Willame et al., (2015) who reported (78.6%) follow-up pregnancy in external specialist clinic.

  • ·Current Abortion

Regarding the current abortion in weeks, more than a third sample size (36%) are between (10-15) weeks. These studies are consistent with Bonalumi et al., (2011) who reported the higher prevalence of current abortion in weeks from (12-16) weeks.

  • ·Causes of Abortion

Approximately (71%) of these study samples are diagnosed. A higher percentage (38%) of these causes is CMV and (28%) are unknown causes. This result is less than the result that reported with Hussan (2013) was (56%) of aborted women with unknown causes of abortion and reported CMV IgM (21%), (29 IgG) causes of abortion.
·Last Age of Pregnancy in Weeks

According to the last age of the pregnancy, less than 20 weeks made near half of the sample (41%). weeks. This study is less than reported with Pass & Arav-Boger (2018) who reported the higher prevalence of the last age of a pregnancy from (20-21) weeks.

  • ·Number of Gravida.

An according to the number of gravidae (1-2) gravida makes (37%) of the sample, these studies supported by Bagheri et al., (2012) who reported when Prim gravid makes (32.1%), Multiparous makes (67.9%).

  • ·Number of Para.

the same number (1-2) makes (48%) according to the number of para, these study consistent with Lee et al., (2020) who reported the number of para (1) makes (47.7%) and reported (39.0%) in his study when the number of para. (2).
·Number of Abortions

While regarding the number of abortions, (67%) of the sample who have one abortion, these studies higher than reported by Umeh et al., (2015) who reported the number of abortions when (one) abortion makes (54%).

  • ·Number of Stillbirths

According to the number of stillbirths, higher percentage (88%) is who have no stillbirth, these study consistent with Alvarado-Esquivel et al., (2018) Who reported (89.3%) have no stillbirth. 

Type of Previous Deliveries

The type of previous deliveries, NVD made (58%) of sample is higher than other types, these studies consistent with Marin et al., (2016)
who reported (56 %) NVD.

Distribution the Women's Knowledge Responses Regarding to All Items about the Risk Factors. Table (4-3):

In the table of the women's knowledge responses regarding all items out the risk factors discussion the women smoking cigarettes less than 20 cigarettes per day is only 1%, and more than 20 cigarettes per day are also 1%. These results supported by Hussain & Sullivan (2017) who reported 4% of women smoking cigarettes. In addition, the husband smoking cigarettes less than 20 cigarettes about 41%, and Smoking more than 20 cigarettes about 40%. This study is almost higher than the study reported by Hussain & Sullivan (2017) who reported (31%) among males whom cigarettes smoking. In addition, these study higher than reported by Lachmann et al., (2018) who reported (21%) of males whom cigarettes smoking. Also in this study the husband Smoking Hookah only 19%. These results support by Hussain & Satar (2013) who reported (13.9) hookah smoking

The women underwent a CMV test during pregnancy in this study was (38%). These study less than reported by Ross et al., (2018) who
reported from (50-80) women underwent CMV test during pregnancy. Only three samples in these studies suffer from viral hepatitis. These studies are consistent with Hughes et al.,

(2017) who reported (1-2.5%)  pregnant women suffer from hepatitis. In addition, these studies inconsistent with Alvarado-Esquivel et al. (2018) who reported (14%)
pregnant women suffer from hepatitis. Only (11%) from samples in these studies suffer from anemia. These finding less than reported with Gautam (2019) who reported (38%)
pregnant women suffer from anemia. Also, these studies inconsistent with WHO/CDC (2008) who reported (42%) of pregnant women suffer from anemia. About (20%) of the samples in these studies had previous surgical operations. These results are less than reported by Joffe & Oguro (2012) who reported (45%) of samples had previous surgical operations. Also, these studies inconsistent with Alvarado-Esquivel et al., (2018) who
reported (71%) of samples had previous surgical operations.

Distribution the IgG and IgM Test Type and Results among Study Sample Table (4-5).

the types of the test and its results in these study, majority proportion (62%) is who have negative results, while the positive result in IgG type is a higher percentage (37%) was more than positive in IgM that had (1%) only. Thes study consistent with De Paschale et al., (2009) in an Urban Area of Northern Italy who reported (0.9%) CMV IgM but this result less than reported by De Paschale et al., (2009) CMV IgG (68.3%). 

Conclusion               


The prevalence rate of CMV IgG seropositivity was reported (37%), while the prevalence rate of CMV IgM seropositive results was lower (1%). CMVI showed significant effects on the abortion rates among pregnant women. This study confirmed the significant association between CMVI and (abortion, stillbirths, Age at Menarche, Regularity of Menstrual Cycle, Age at Married, Interval between last pregnancy & present Pregnancy, Causes of Abortion, Number of Para, Type of Previous Delivery to Present Delivery, IgG & IgM Test Results,
residence, education level and employment status). It was concluded that socio-economic status of the tested women has no significant effects on the rates of anti-CMV IgG and IgM seropositive results.                                       

Recommendations         
There is need to increase public awareness about cytomegalovirus and their effect on maternal and fetal as well as it correlation with history abortion and congenital cytomegalovirus infection. Encourage the women to attained regular antenatal visit to conduct Routine screening of CMV IgM and CMV IgG. And any women with a history of abortion must be investigated before and after pregnancy. Educational program about risk factor and consequences of cytomegalovirus and Educational program about practice good
personal hygiene to reduce the risk of congenital CMV infection and transmission, especially hand washing after hand ling diapers or oral secretions shout be conducting on nurses in maternity ward to give care to cases with cytomegalovirus. Adoption of psychological support program to pregnant women or aborted women with cytomegalovirus. Women were more frequently aware of CMV if they were followed by an obstetrician than by a midwife or a general practitioner. Although most women were followed by an obstetrician, theinformation rate remained low. It is crucial to improve CMV information to pregnant women from the 1st trimester in order to prevent the risks for the    fetus/newborn.

 

 References

وزارة التخطیط, الجهاز المرکزی للإحصاء, (I-WISH 2011)  المسح المتکامل للأوضاع الاجتماعیة  والصحیة للمرأة العراقیة, التقریر التفصیلی.

Abdul Wahab, S. A. (2012). Cytomegalovirus Incidence in Pregnant    Women with Recurrent Abortion. J Bioanal Biomed, 4, 101-103.

AKUNAEZIRI, U. A. (2018). CYTOMEGALOVIRUS INFECTION AND RECURRENT PREGNANCY LOSS IN JOS, PLATEAU STATE. FACULTY of OBSTETRICS AND GYNAECOLOGY.

Alghalibi, S. M., Abdullah, Q. Y. M., Al-Arnoot, S., & Al-Thobhani, A. (2016). Seroprevalence of Cytomegalovirus among Pregnant Women in Hodeidah city, Yemen. J Hum Virol Retrovirol, 3(5), 00106.                                                      ‏

Ali, K. S. (2020). The Sero-Prevalence of Cytomegalovirus Infection among Women with Abortion and Intrauterine Death in Erbil City Kurdistan Region, Iraq. Diyala Journal of Medicine, 18(1), 77-90.

Aljumaili, Z. K. M., Alsamarai, A. M., & Najem, W. S. (2014). Cytomegalovirus seroprevalence in women with bad obstetric history in Kirkuk, Iraq. Journal of infection and public health, 7(4), 277-288.                                                                                                                       ‏

Al-musawi, M. H. J. (2018). CYTOMEGALOVIRUS ANTIBODIE AMONG PREGNANTLADIESAT KAMAL AL-SAMARRAoI HOSPITAL IN BAGHDAD CITY/IRAQ. Pak. J. Biotechnol. Vol, 15(1), 83-87.

‏Alvarado-Esquivel, C., del Carmen Terrones-Saldivar, M., Hernandez-Tinoco, J., Munoz-Terrones, M. D. E., Gallegos-Gonzalez, R. O., Sanchez-Anguiano, L. F., ... & Antuna-Salcido, E. I. (2018). Seroepidemiology of cytomegalovirus infection in pregnant women in the Central Mexican City of Aguascalientes. Journal of clinical medicine research, 10(4), 337.

Andrievskaya, I. A., Lucenko, M. T., & Babenko, O. P. (2015). Specific and non-specific factors of humoral immunity as markers for       pregnancy loss in women with cytomegalovirus infection. International Journal of Biomedicine, 5(4), 184-187.

 Bagheri, L., Mokhtarian, H., Sarshar, N., & Ghahramani, M. (2012). Seroprevalence of cytomegalovirus infection among pregnant women in Eastern Iran. Brazilian Journal of Infectious Diseases, 16(4), 402-403.

Berger, A., Reitter, A., Harter, P. N., Buxmann, H., Allwinn, R., Louwen, F., & Doerr, H. W. (2011). Problems and challenges in the diagnosis of vertical infection with human cytomegalovirus (CMV): lessons from two accidental cases. Journal of Clinical Virology, 51(4), 285-288.

Bonalumi, S., Trapanese, A., Santamaria, A., D’Emidio, L., & Mobili, L. (2011). Cytomegalovirus infection in pregnancy: review of the literature. Journal of prenatal medicine, 5(1), 1.

De Paschale, M., Agrappi, C., Manco, M. T., Paganini, A., & Clerici, P. (2009). Incidence and risk of cytomegalovirus infection during pregnancy in an urban area of Northern Italy. Infectious diseases in obstetrics and gynecology, 2009.

Demmler, G. J. (1991). Infectious Diseases Society of America and Centers for Disease Control: summary of a workshop on surveillance for congenital cytomegalovirus disease. Reviews of infectious diseases, 13(2), 315-329.

Firth, H. V., & Hurst, J. A. (2017). Oxford Desk Reference: Clinical Genetics and Genomics. Oxford University Press.

Gao, Y. L., Gao, Z., He, M., & Liao, P. (2018). Infection status of human parvovirus B19, cytomegalovirus and herpes simplex Virus-1/2 in women with first-trimester spontaneous abortions in Chongqing, China. Virology journal, 15(1), 74.

Gaur, P., Kachramanoglou, C., Lyall, H., & Jan, W. (2020). Is it not time for international guidelines to combat congenital cytomegalovirus infection? A review of central nervous system manifestations. Clinical Radiology.  

Gautam, S., Min, H., Kim, H., & Jeong, H. S. (2019). Determining factors for the prevalence of anemia in women of reproductive age in Nepal: Evidence from recent national survey data. PloSone, 14(6).

Hamid, K. M., Onoja, A. B., Tofa, U. A., & Garba, K. N. (2014). Seroprevalence of cytomegalovirus among pregnant women attending Murtala Mohammed Specialist Hospital Kano, Nigeria. African health sciences, 14(1), 125-130.

Hamilton, S. T., Scott, G., Naing, Z., Iwasenko, J., Hall, B., Graf, N., ... & Rawlinson, W. D. (2012). Human cytomegalovirus-induces cytokine changes in the placenta with implications for adverse pregnancy outcomes. PloS one, 7(12), e52899.

Hughes, B. L., Gyamfi-Bannerman, C., & Society for Maternal-Fetal Medicine (SMFM. (2016). Diagnosis and antenatal management of congenital cytomegalovirus infection. American journal of obstetrics and gynecology, 214(6), B5-B11.

 Hussain, H. Y., & Satar, B. A. A. (2013). Prevalence and determinants of tobacco use among Iraqi adolescents: Iraq GYTS 2012. Tobacco induced diseases, 11(1), 14.

Hussain, Z., & Sullivan, R. (2017). Tobacco in post-conflict settings: the case of Iraq. ecancermedicalscience, 11.

Hussan, B. M. (2013). Study the prevalence of ACL, APL, CMV, HSV, Rubella and Toxoplasma gondii in aborted women in Baghdad. Medical Journal of Babylon, 10(2), 455-464.

Jihad, S. A. (2015). Molecular Detection of Cytomegalovirus (CMV) Isolated from Repeated Miscarriage Women and its Relation to TLR2 and ILT2 Receptors (Doctoral dissertation, Ministry of Higher Education).

Joffe, S. N., & Oguro, Y. (Eds.). (2012). Advances in Nd: YAG laser surgery. Springer Science & Business Media.

Karatas, H., Gurer, G., Pinar, A., Soylemezoglu, F., Tezel, G. G., Hascelik, G., ... & Saygi, S. (2008). Investigation of HSV-1, HSV-2, CMV, HHV-6 and HHV-8 DNA by real-time PCR in surgical resection materials of epilepsy patients with mesial temporal lobe sclerosis. Journal of the neurological sciences, 264(1-2), 151-156.

Lachmann, R., Loenenbach, A., Waterboer, T., Brenner, N., Pawlita, M., Michel, A., ... & Wiese-Posselt, M. (2018). Cytomegalovirus (CMV) seroprevalence in the adult population of Germany. PLoS One, 13(7).

Lee, C. Y., Lin, K. Y., Chen, T. H., Sung, C. H., Fang, Y. P., Sung, P. L., & Chan, Y. J. (2020). Prevalence of cytomegalovirus DNAemia and genotypic distribution among childbearing mothers and neonates in Taiwan. International Journal of Infectious Diseases, 91, 240-245.

Mamuye, Y., Nigatu, B., Bekele, D., Challa, F., & Desale, A. (2015). Seroprevalence and Absence of Cytomegalovirus Infection Risk Factors among Pregnant Women in St. Paul’s Hospital Millennium Medical College. Gynecol Obstet (Sunnyvale), 5(299), 2161-0932 .

Marin, L. J., de Carvalho Cardoso, E. S., Sousa, S. M. B., de Carvalho, L. D., Marques Filho, M. F., Raiol, M. R., & Gadelha, S. R. (2016). Prevalence and clinical aspects of CMV congenital Infection in a low-income population. Virology journal, 13(1), 148.                                                

Mostad, S. B., Kreiss, J. K., Ryncarz, A., Chohane, B., Mandaliya, K., Ndinya-Achola, J., ... & Corey, L. (2000). Cervical shedding of herpes simplex virus and cytomegalovirus throughout the menstrual cycle in women infected with human immunodeficiency virus type 1. American journal of obstetrics and gynecology, 183(4), 948-955.

O'Connor, C. M., & Murphy, E. A. (2012). A myeloid progenitor cell line capable of supporting human cytomegalovirus latency and reactivation, resulting in infectious progeny. Journal of virology, 86(18), 9854-9865 .

Pass, R. F., & Arav-Boger, R. (2018). Maternal and fetal cytomegalovirus infection: diagnosis, management, and prevention. F1000Research, 7.

Revello, M. G., Tibaldi, C., Masuelli, G., Frisina, V., Sacchi, A., Furione, M., ... & Gerna, G. (2015). Prevention of primary cytomegalovirus infection in pregnancy. EBioMedicine 2: 1205–1210.

Ross, S., Long, S. S., & Kimberlin, D. W. (2018). Closer to universal newborn screening for congenital cytomegalovirus infection but far away from antiviral therapy in all infected infants.

Schoenfisch, A. L., Dollard, S. C., Amin, M., Gardner, L. I., Klein, R. S., Mayer, K., ... & Cannon, M. J. (2011). Cytomegalovirus (CMV) shedding is highly correlated with markers of immunosuppression in CMV-seropositive women. Journal of medical microbiology, 60(6), 768-774.

Umeh, E. U., Onoja, T. O., Aguoru, C. U., & Umeh, J. C. (2015). Seroprevalence of cytomegalovirus antibodies in pregnant women, Benue State, Nigeria. Journal of Infectious Diseases & Therap   y.   

Wang, C., Zhang, X., Bialek, S., & Cannon, M. J. (2011). Attribution of congenital cytomegalovirus infection to primary versus non-primary maternal infection. Clinical infectious diseases, 52(2), e11-e13.

WHO, C. (2008). Worldwide prevalence of anaemia 1993–2005. WHO global database on anaemia

Willame, A., Blanchard-Rohner, G., Combescure, C., Irion, O., Posfay-Barbe, K., & Martinez de Tejada, B. (2015). Awareness of cytomegalovirus infection among pregnant women in Geneva, Switzerland: a cross-sectional study. International journal of environmental research and public health, 12(12), 15285-15297.

Wizman, S., Lamarre, V., Coic, L., Kakkar, F., Le Meur, J. B., Rousseau, C., ... & Tapiero, B. (2016). Awareness of cytomegalovirus and risk factors for susceptibility among pregnant women, in Montreal, Canada. BMC pregnancy and childbirth, 16(1), 54. ‏

Yeroh, M. I. C. H. A. E. L., Aminu, M., & Musa, B. O. P. (2015). Seroprevalence of cytomegalovirus infection amongst pregnant women in Kaduna state, Nigeria. African Journal of Clinical and Experimental Microbiology, 16(1), 37-44.

Zhou, Y., Bian, G., Zhou, Q., Gao, Z., Liao, P., Liu, Y., & He, M. (2015). Detection of cytomegalovirus, human parvovirus B19, and herpes simplex virus‐1/2 in women with first‐trimester spontaneous abortions. Journal of medical virology, 87(10), 1749-1753

 



[1] Professor in child and maternity health nursing at College of nursing.

[2]  Collage nurse at Ninawa Health department.

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(2020). Assessing the risk factors for cytomegalovirus and prediction the relationship between abortion and virus in Kirkuk City Hospitals. Mosul Journal of Nursing, 8(2), 127-141. doi: 10.33899/mjn.2020.166078
Salwa Hazim Ghailan; Samira Shokir Mohammed. "Assessing the risk factors for cytomegalovirus and prediction the relationship between abortion and virus in Kirkuk City Hospitals". Mosul Journal of Nursing, 8, 2, 2020, 127-141. doi: 10.33899/mjn.2020.166078
(2020). 'Assessing the risk factors for cytomegalovirus and prediction the relationship between abortion and virus in Kirkuk City Hospitals', Mosul Journal of Nursing, 8(2), pp. 127-141. doi: 10.33899/mjn.2020.166078
Assessing the risk factors for cytomegalovirus and prediction the relationship between abortion and virus in Kirkuk City Hospitals. Mosul Journal of Nursing, 2020; 8(2): 127-141. doi: 10.33899/mjn.2020.166078
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References

وزارة التخطیط, الجهاز المرکزی للإحصاء, (I-WISH 2011)  المسح المتکامل للأوضاع الاجتماعیة  والصحیة للمرأة العراقیة, التقریر التفصیلی.

Abdul Wahab, S. A. (2012). Cytomegalovirus Incidence in Pregnant    Women with Recurrent Abortion. J Bioanal Biomed, 4, 101-103.

AKUNAEZIRI, U. A. (2018). CYTOMEGALOVIRUS INFECTION AND RECURRENT PREGNANCY LOSS IN JOS, PLATEAU STATE. FACULTY of OBSTETRICS AND GYNAECOLOGY.

Alghalibi, S. M., Abdullah, Q. Y. M., Al-Arnoot, S., & Al-Thobhani, A. (2016). Seroprevalence of Cytomegalovirus among Pregnant Women in Hodeidah city, Yemen. J Hum Virol Retrovirol, 3(5), 00106.                                                      ‏

Ali, K. S. (2020). The Sero-Prevalence of Cytomegalovirus Infection among Women with Abortion and Intrauterine Death in Erbil City Kurdistan Region, Iraq. Diyala Journal of Medicine, 18(1), 77-90.

Aljumaili, Z. K. M., Alsamarai, A. M., & Najem, W. S. (2014). Cytomegalovirus seroprevalence in women with bad obstetric history in Kirkuk, Iraq. Journal of infection and public health, 7(4), 277-288.                                                                                                                       ‏

Al-musawi, M. H. J. (2018). CYTOMEGALOVIRUS ANTIBODIE AMONG PREGNANTLADIESAT KAMAL AL-SAMARRAoI HOSPITAL IN BAGHDAD CITY/IRAQ. Pak. J. Biotechnol. Vol, 15(1), 83-87.

‏Alvarado-Esquivel, C., del Carmen Terrones-Saldivar, M., Hernandez-Tinoco, J., Munoz-Terrones, M. D. E., Gallegos-Gonzalez, R. O., Sanchez-Anguiano, L. F., ... & Antuna-Salcido, E. I. (2018). Seroepidemiology of cytomegalovirus infection in pregnant women in the Central Mexican City of Aguascalientes. Journal of clinical medicine research, 10(4), 337.

Andrievskaya, I. A., Lucenko, M. T., & Babenko, O. P. (2015). Specific and non-specific factors of humoral immunity as markers for       pregnancy loss in women with cytomegalovirus infection. International Journal of Biomedicine, 5(4), 184-187.

 Bagheri, L., Mokhtarian, H., Sarshar, N., & Ghahramani, M. (2012). Seroprevalence of cytomegalovirus infection among pregnant women in Eastern Iran. Brazilian Journal of Infectious Diseases, 16(4), 402-403.

Berger, A., Reitter, A., Harter, P. N., Buxmann, H., Allwinn, R., Louwen, F., & Doerr, H. W. (2011). Problems and challenges in the diagnosis of vertical infection with human cytomegalovirus (CMV): lessons from two accidental cases. Journal of Clinical Virology, 51(4), 285-288.

Bonalumi, S., Trapanese, A., Santamaria, A., D’Emidio, L., & Mobili, L. (2011). Cytomegalovirus infection in pregnancy: review of the literature. Journal of prenatal medicine, 5(1), 1.

De Paschale, M., Agrappi, C., Manco, M. T., Paganini, A., & Clerici, P. (2009). Incidence and risk of cytomegalovirus infection during pregnancy in an urban area of Northern Italy. Infectious diseases in obstetrics and gynecology, 2009.

Demmler, G. J. (1991). Infectious Diseases Society of America and Centers for Disease Control: summary of a workshop on surveillance for congenital cytomegalovirus disease. Reviews of infectious diseases, 13(2), 315-329.

Firth, H. V., & Hurst, J. A. (2017). Oxford Desk Reference: Clinical Genetics and Genomics. Oxford University Press.

Gao, Y. L., Gao, Z., He, M., & Liao, P. (2018). Infection status of human parvovirus B19, cytomegalovirus and herpes simplex Virus-1/2 in women with first-trimester spontaneous abortions in Chongqing, China. Virology journal, 15(1), 74.

Gaur, P., Kachramanoglou, C., Lyall, H., & Jan, W. (2020). Is it not time for international guidelines to combat congenital cytomegalovirus infection? A review of central nervous system manifestations. Clinical Radiology.  

Gautam, S., Min, H., Kim, H., & Jeong, H. S. (2019). Determining factors for the prevalence of anemia in women of reproductive age in Nepal: Evidence from recent national survey data. PloSone, 14(6).

Hamid, K. M., Onoja, A. B., Tofa, U. A., & Garba, K. N. (2014). Seroprevalence of cytomegalovirus among pregnant women attending Murtala Mohammed Specialist Hospital Kano, Nigeria. African health sciences, 14(1), 125-130.

Hamilton, S. T., Scott, G., Naing, Z., Iwasenko, J., Hall, B., Graf, N., ... & Rawlinson, W. D. (2012). Human cytomegalovirus-induces cytokine changes in the placenta with implications for adverse pregnancy outcomes. PloS one, 7(12), e52899.

Hughes, B. L., Gyamfi-Bannerman, C., & Society for Maternal-Fetal Medicine (SMFM. (2016). Diagnosis and antenatal management of congenital cytomegalovirus infection. American journal of obstetrics and gynecology, 214(6), B5-B11.

 Hussain, H. Y., & Satar, B. A. A. (2013). Prevalence and determinants of tobacco use among Iraqi adolescents: Iraq GYTS 2012. Tobacco induced diseases, 11(1), 14.

Hussain, Z., & Sullivan, R. (2017). Tobacco in post-conflict settings: the case of Iraq. ecancermedicalscience, 11.

Hussan, B. M. (2013). Study the prevalence of ACL, APL, CMV, HSV, Rubella and Toxoplasma gondii in aborted women in Baghdad. Medical Journal of Babylon, 10(2), 455-464.

Jihad, S. A. (2015). Molecular Detection of Cytomegalovirus (CMV) Isolated from Repeated Miscarriage Women and its Relation to TLR2 and ILT2 Receptors (Doctoral dissertation, Ministry of Higher Education).

Joffe, S. N., & Oguro, Y. (Eds.). (2012). Advances in Nd: YAG laser surgery. Springer Science & Business Media.

Karatas, H., Gurer, G., Pinar, A., Soylemezoglu, F., Tezel, G. G., Hascelik, G., ... & Saygi, S. (2008). Investigation of HSV-1, HSV-2, CMV, HHV-6 and HHV-8 DNA by real-time PCR in surgical resection materials of epilepsy patients with mesial temporal lobe sclerosis. Journal of the neurological sciences, 264(1-2), 151-156.

Lachmann, R., Loenenbach, A., Waterboer, T., Brenner, N., Pawlita, M., Michel, A., ... & Wiese-Posselt, M. (2018). Cytomegalovirus (CMV) seroprevalence in the adult population of Germany. PLoS One, 13(7).

Lee, C. Y., Lin, K. Y., Chen, T. H., Sung, C. H., Fang, Y. P., Sung, P. L., & Chan, Y. J. (2020). Prevalence of cytomegalovirus DNAemia and genotypic distribution among childbearing mothers and neonates in Taiwan. International Journal of Infectious Diseases, 91, 240-245.

Mamuye, Y., Nigatu, B., Bekele, D., Challa, F., & Desale, A. (2015). Seroprevalence and Absence of Cytomegalovirus Infection Risk Factors among Pregnant Women in St. Paul’s Hospital Millennium Medical College. Gynecol Obstet (Sunnyvale), 5(299), 2161-0932 .

Marin, L. J., de Carvalho Cardoso, E. S., Sousa, S. M. B., de Carvalho, L. D., Marques Filho, M. F., Raiol, M. R., & Gadelha, S. R. (2016). Prevalence and clinical aspects of CMV congenital Infection in a low-income population. Virology journal, 13(1), 148.                                                

Mostad, S. B., Kreiss, J. K., Ryncarz, A., Chohane, B., Mandaliya, K., Ndinya-Achola, J., ... & Corey, L. (2000). Cervical shedding of herpes simplex virus and cytomegalovirus throughout the menstrual cycle in women infected with human immunodeficiency virus type 1. American journal of obstetrics and gynecology, 183(4), 948-955.

O'Connor, C. M., & Murphy, E. A. (2012). A myeloid progenitor cell line capable of supporting human cytomegalovirus latency and reactivation, resulting in infectious progeny. Journal of virology, 86(18), 9854-9865 .

Pass, R. F., & Arav-Boger, R. (2018). Maternal and fetal cytomegalovirus infection: diagnosis, management, and prevention. F1000Research, 7.

Revello, M. G., Tibaldi, C., Masuelli, G., Frisina, V., Sacchi, A., Furione, M., ... & Gerna, G. (2015). Prevention of primary cytomegalovirus infection in pregnancy. EBioMedicine 2: 1205–1210.

Ross, S., Long, S. S., & Kimberlin, D. W. (2018). Closer to universal newborn screening for congenital cytomegalovirus infection but far away from antiviral therapy in all infected infants.

Schoenfisch, A. L., Dollard, S. C., Amin, M., Gardner, L. I., Klein, R. S., Mayer, K., ... & Cannon, M. J. (2011). Cytomegalovirus (CMV) shedding is highly correlated with markers of immunosuppression in CMV-seropositive women. Journal of medical microbiology, 60(6), 768-774.

Umeh, E. U., Onoja, T. O., Aguoru, C. U., & Umeh, J. C. (2015). Seroprevalence of cytomegalovirus antibodies in pregnant women, Benue State, Nigeria. Journal of Infectious Diseases & Therap   y.   

Wang, C., Zhang, X., Bialek, S., & Cannon, M. J. (2011). Attribution of congenital cytomegalovirus infection to primary versus non-primary maternal infection. Clinical infectious diseases, 52(2), e11-e13.

WHO, C. (2008). Worldwide prevalence of anaemia 1993–2005. WHO global database on anaemia

Willame, A., Blanchard-Rohner, G., Combescure, C., Irion, O., Posfay-Barbe, K., & Martinez de Tejada, B. (2015). Awareness of cytomegalovirus infection among pregnant women in Geneva, Switzerland: a cross-sectional study. International journal of environmental research and public health, 12(12), 15285-15297.

Wizman, S., Lamarre, V., Coic, L., Kakkar, F., Le Meur, J. B., Rousseau, C., ... & Tapiero, B. (2016). Awareness of cytomegalovirus and risk factors for susceptibility among pregnant women, in Montreal, Canada. BMC pregnancy and childbirth, 16(1), 54. ‏

Yeroh, M. I. C. H. A. E. L., Aminu, M., & Musa, B. O. P. (2015). Seroprevalence of cytomegalovirus infection amongst pregnant women in Kaduna state, Nigeria. African Journal of Clinical and Experimental Microbiology, 16(1), 37-44.

Zhou, Y., Bian, G., Zhou, Q., Gao, Z., Liao, P., Liu, Y., & He, M. (2015). Detection of cytomegalovirus, human parvovirus B19, and herpes simplex virus‐1/2 in women with first‐trimester spontaneous abortions. Journal of medical virology, 87(10), 1749-1753

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