| Summary: | "nBackground: Cytomegalovirus (CMV) infection is associated with significant maternal and fetal consequences. The aim of pre­sent study was to determine the current prenatal CMV seroprevalence in Eastern Azerbaijan and evaluate the routine labora­tory diagnostic techniques of anti-CMV immunoglobulin M (IgM) and immunoglobulin G (IgG)."nMethods: During the present prospective cross-sectional study, 125 women referred to No. 1 Laboratory of Specialized Clin­ics of Tabriz University of Medical Sciences and seeking prenatal care were evaluated during 2003-2006. CMV IgG and IgM antibodies were determined with ELISA technique. Statistical analyses were performed using the SPSS statistical pack­age version 13.0."nResults:  Eight four percent of the subjects were seropositive. Out of 20 subjects with primary seronegativity, 12 (9.6%) re­mind seronegative during reexaminations and follow up, but eight (6.4%) subjects showed  primary infection in the second to third trimesters of gestation. In two (1.6%) of these eight subjects, IgM was persisted for more than 20 months."nConclusion: Results showed a similar seroprevalence of CMV in Eastern Azerbaijan. Also, we found that ELISA IgM test was not an appropriate method for differentiation of past or recent CMV infections especially in the pregnant women.  
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