Journal
JOURNAL OF INFECTIOUS DISEASES
Volume 218, Issue 8, Pages 1200-1204Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/infdis/jiy321
Keywords
congenital infection; cytomegalovirus; pregnancy; seroconversion
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Funding
- Eunice Kennedy Shriver National Institute of Child Health and Human Development [2R01HD061959-07A2]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Brazil [2013/06579-0]
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We determined the risk of seroconversion in seronegative pregnant women living in a high seroprevalence population. Cytomegalovirus (CMV)-immunoglobulin G reactivity was determined at the 1st trimester in all women and sequentially for seronegative women. A total of 1915 of 1952 (98.1%; 95% confidence interval [CI], 97.4%-98.7%) women were seropositive, and 36 (1.8%; 95% CI, 1.3%-2.6%) were seronegative. Five of the 36-seronegative women seroconverted for a cumulative rate of 13.9% (95% CI, 4.8%-30.6%). Congenital CMV infection was diagnosed in 1 of 36 infants (2.8%; 95% CI, 0.5%-63.9%) born to seronegative women compared with 8 of 1685 (0.5%; 95% CI, 0.2%-1.0%) infants born to seropositive mothers. Even with a high risk of primary infection in seronegative women, most CMV-infected infants were born to women with pre-existing seroimmunity.
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