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  • Title: Intrauterine parvovirus B19 infection may cause an asymptomatic or recurrent postnatal infection.
    Author: Koch WC, Adler SP, Harger J.
    Journal: Pediatr Infect Dis J; 1993 Sep; 12(9):747-50. PubMed ID: 8414803.
    Abstract:
    Although infection with parvovirus B19 (B19) during pregnancy may cause fetal demise, the true incidence of intrauterine infection is unknown. For 19 women with serologically confirmed B19 infections between 4 and 38 weeks of gestation, we performed follow-up examinations of their infants. Serial sonograms of the 19 fetuses showed that none developed hydrops. All 19 women delivered healthy term infants. Cord sera of four infants were tested for IgM to B19 and three were positive. Between 3 and 21 months of age, all 19 infants had normal physical examinations, developmental evaluations and hematocrits; and 16 lacked IgG to B19. One infant who was IgM-positive to B19 at birth was IgM-positive at age 7 months when he also had an IgG titer to B19 of 1:500,000 (mother's concurrent titer, 1:10,000), and had B19 DNA in serum detected by polymerase chain reaction. The other two infants who were IgM-positive at birth were IgM- and IgG-negative by 11 and 16 months of age. These results suggest that intrauterine B19 infection may be frequent and occasionally cause an asymptomatic postnatal infection.
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