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Abstract
Background. Cytomegalovirus (CMV) is a common opportunistic infection among HIV-infected individuals, a major source of serious complications among organ-transplant recipients, and a leading cause of hearing loss, vision loss, and mental retardation among congenitally infected children. Women infected for the first time during pregnancy are especially likely to transmit CMV to their fetuses.
Objective. In this study, it was aimed to determine the rate of CMV seroprevalence in pregnant women, the prevalence of maternal CMV infection and also the incidence of congenital CMV infection in their newborns in the Kazeroon, south of Iran.
Methods. Between January 2007 and July 2007, all (n = 1472) pregnant women who attended the obstetric ward of Valiasr hospital in Kazeroon for delivery, were enrolled in this study, and according to the presence or absence of anti CMV-IgM and CMV-IgG, were classified as seropositive, seronegative and having active maternal CMV infection. Differentiation of primary and recurrent CMV infection in women with both CMV-IgM (+) and CMV-IgG (+) antibody was determined by the avidity index (AI) of anti-CMV IgG.
Results. The rate of seropositivity was found as 97.69% and the rate of seronegativity as 2.31% in pregnant women. The prevalence of active maternal CMV infection was found as 4.35% and among these pregnant women, the incidence of primary and recurrent maternal CMV infection was 34.4% and 65.6% respectively.
Conclusion. Seroprevalence rate of CMV in pregnant women is high and most infections are recurrent. Thus, it does not seem to be cost-effective to screen all pregnant women for CMV infection, as in the other countries with high seropositivity rate.