Herpes simplex virus type 2: Seroprevalence in antenatal women

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Abstract

Aims:

To determine the seroprevalence of herpes simplex type 2 (HSV-2) infection in pregnant females, assess the frequency of unrecognized infection and identify the demographic profile and risk factors associated with the seroprevalence.

Materials and Methods:

Two hundred randomly selected, asymptomatic pregnant females attending the Obstetrics and Gynecology Outpatient Department for a routine antenatal check-up constituted the study group. Serum specimens were screened for HSV-2 infection by detecting IgG class antibodies against HSV-2-specific glycoprotein G-2 using an enzyme-linked immunosorbent assay kit.

Results:

A seroprevalence of 7.5% was found in our study. Seropositivity was maximum in the age group ≥30 years (22.20%), followed by 26–30 years (9.7%), 21–25 years (2.20%) and ≤20 years (0%). HSV-2 seropositivity was found to be significantly associated with increasing age, parity, number of sexual partners, duration of sexual activity and history of abortions ( P < 0.05). No statistically significant correlation was observed between seropositivity and other demographic variables such as place of residence, education, annual family income and occupation ( P > 0.05). No statistically significant association of seropositivity with present or past history suggestive of other sexually transmitted infections was found. None of our cases tested positive for human immunodeficiency syndrome (HIV).

Conclusion:

A relatively low prevalence of HSV-2 seropositivity was found in our study, with a high frequency of unrecognized and asymptomatic infections. Our findings suggest that type-specific serotesting could be an efficient strategy to diagnose clinically asymptomatic HSV-2 infections and, therefore, to reduce the risk of HSV-2 and HIV sexual transmission by prophylactic counseling against unprotected intercourse. It may also be a useful adjunct in detecting cases who present with symptoms not directly suggestive of genital herpes.

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Most cited references 23

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Herpes simplex virus type 2 in the United States, 1976 to 1994.

S Aral, Mitchell A. Nahmias, Jae K. Lee … (1997)

Herpes simplex virus type 2 (HSV-2) infection is usually transmitted sexually and can cause recurrent, painful genital ulcers. In neonates the infection is potentially lethal. We investigated the seroprevalence and correlates of HSV-2 infection in the United States and identified changes in HSV-2 seroprevalence since the late 1970s. Serum samples and questionnaire data were collected during the National Health and Nutrition Examination Surveys (NHANES) II (1976 to 1980) and III (1988 to 1994). HSV-2 antibody was assessed with an immunodot assay specific for glycoprotein gG-2 of HSV-2. From 1988 to 1994, the seroprevalence of HSV-2 in persons 12 years of age or older in the United States was 21.9 percent (95 percent confidence interval, 20.2 to 23.6 percent), corresponding to 45 million infected people in the noninstitutionalized civilian population. The seroprevalence was higher among women (25.6 percent) than men (17.8 percent) and higher among blacks (45.9 percent) than whites (17.6 percent). Less than 10 percent of all those who were seropositive reported a history of genital herpes infection. In a multivariate model, the independent predictors of HSV-2 seropositivity were female sex, black race or Mexican-American ethnic background, older age, less education, poverty, cocaine use, and a greater lifetime number of sexual partners. As compared with the period from 1976 to 1980, the age-adjusted seroprevalence of HSV-2 rose 30 percent (95 percent confidence interval, 15.8 to 45.8 percent). The seroprevalence quintupled among white teenagers and doubled among whites in their twenties. Among blacks and older whites, the increases were smaller. Since the late 1970s, the prevalence of HSV-2 infection has increased by 30 percent, and HSV-2 is now detectable in roughly one of five persons 12 years of age or older nationwide. Improvements in the prevention of HSV-2 infection are needed, particularly since genital ulcers may facilitate the transmission of the human immunodeficiency virus.

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The acquisition of herpes simplex virus during pregnancy.

Zane A. Brown, Stacy Selke, Judy Zeh … (1997)

The acquisition of genital herpes during pregnancy has been associated with spontaneous abortion, prematurity, and congenital and neonatal herpes. The frequency of seroconversion, maternal symptoms of the disease, and the timing of its greatest effect on the outcome of pregnancy have not been systematically studied. We studied 7046 pregnant women whom serologic tests showed to be at risk for herpes simplex virus (HSV) infection. Serum samples obtained at the first prenatal visit, at approximately 16 and 24 weeks, and during labor were tested for antibodies to HSV types 1 and 2 (HSV-1 and HSV-2) by the Western blot assay, and the results were correlated with the occurrence of antenatal genital infections. Ninety-four of the women became seropositive for HSV; 34 of the 94 women (36 percent) had symptoms consistent with herpes infection. Women who were initially seronegative for both HSV-1 and HSV-2 had an estimated chance of seroconversion for either virus of 3.7 percent; those who were initially seropositive only for HSV-1 had an estimated chance of HSV-2 seroconversion of 1.7 percent; and those who were initially HSV-2-seropositive had an estimated chance of zero for acquiring HSV-1 infection. Among the 60 of the 94 pregnancies for which the time of acquisition of HSV infection was known, 30 percent of the infections occurred in the first trimester, 30 percent in the second, and 40 percent in the third. HSV seroconversion completed by the time of labor was not associated with an increase in neonatal morbidity or with any cases of congenital herpes infection. However, among the infants born to nine women who acquired genital HSV infection shortly before labor, neonatal HSV infection occurred in four infants, of whom one died. Two percent or more of susceptible women acquire HSV infection during pregnancy. Acquisition of infection with seroconversion completed before labor does not appear to affect the outcome of pregnancy, but infection acquired near the time of labor is associated with neonatal herpes and perinatal morbidity.

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Epidemiology of herpes simplex virus type 2 infection in the developing world.

Helen Weiss (2004)

Herpes simplex virus type 2 (HSV-2) is a common infection in many countries, with prevalence in some regions, such as sub-Saharan Africa, higher than in the USA. Prevalence in adult general populations in sub-Saharan Africa ranges from 30% to 80% in women, and from 10% to 50% in men. Most data from Central and South America are from women, in whom HSV-2 prevalence ranges from about 20% to 40%. Prevalence in the general population in developing Asian countries appears to be lower (10-30%). In common with the developed world, HSV-2 seropositivity is uniformly higher in women than in men and increases with age. In general, HSV-2 seroprevalence is high in populations whose behaviour leads to a high risk of acquiring other sexually transmitted infections (STIs), such as STI clinic attendees and sex workers (SWs), with some African studies reporting greater than 80% HSV seropositivity in SWs. New infections are most common among young adults, a fact that should be considered when proposing and implementing measures to reduce HSV, and possibly HIV, transmission. Currently, comparison between studies is hampered by the lack of a validated type-specific serological assay that has a similar performance across a range of populations. HSV-2 is a major cause of genital ulcer disease (GUD) in the developing world. Genital herpes is a cause of morbidity and increases the risk of HIV acquisition, due to disruption of mucosal membranes. Where possible, the aetiology of GUD should be evaluated using polymerase chain reaction (PCR), while recognizing that co-pathogens can exist in a lesion. GUD management should incorporate HIV testing and antiherpetic treatment.

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Author and article information

Journal

Journal ID (nlm-ta): Indian J Sex Transm Dis

Journal ID (publisher-id): IJSTD

Title: Indian Journal of Sexually Transmitted Diseases

Publisher: Medknow Publications (India )

ISSN (Print): 0253-7184

ISSN (Electronic): 1998-3816

Publication date (Print): Jan-Jun 2010

Volume: 31

Issue: 1

Pages: 11-15

Affiliations

Department of Dermatology, Government Medical College and Hospital, Jammu - 180 001, Jammu & Kashmir, India

Author notes

Address for correspondence: Dr. Shagufta Rathore, Department of Dermatology, Government Medical College and Hospital, Jammu - 180 001, Jammu & Kashmir, India. E-mail: shagufta.giri@ 123456yahoo.com

Article

Publisher ID: IJSTD-31-11

DOI: 10.4103/0253-7184.68994

PMC ID: 3140142

PubMed ID: 21808430

SO-VID: 3658c21c-2c74-4fd8-afe1-51a32b31591b

License:

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Herpes simplex virus type 2: Seroprevalence in antenatal women

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Abstract

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Most cited references 23

Herpes simplex virus type 2 in the United States, 1976 to 1994.

The acquisition of herpes simplex virus during pregnancy.

Epidemiology of herpes simplex virus type 2 infection in the developing world.

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