de Oliveira CS, de Matos HJ, Ramos FLDP, Pinto AYDN, Graim PNDS, Guimarães VDPR, Gomes LTS, Serra EMF, Cruz AC, Leal A, Henriques DF, Lima JA, Anjos MV, Pinto EV, de Souza AW, Vasconcelos PFDC. Risk of Zika virus-associated birth defects in congenital confirmed cases in the Brazilian Amazon.
Rev Panam Salud Publica 2020;
44:e116. [PMID:
32952536 PMCID:
PMC7491861 DOI:
10.26633/rpsp.2020.116]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 06/02/2020] [Indexed: 01/08/2023] Open
Abstract
Objective
To establish the risk of microcephaly in neonates born to women infected with ZIKV during pregnancy.
Methods
A cohort of laboratory-confirmed ZIKV cases of congenital infections (109 mothers infected during pregnancy and 101 newborns) among 308 suspect cases was followed in Belem, Pará, Brazil, from October 2015 to December 2017.
Results
A microcephaly risk of 1.98% (95% CI 0.54-6.93%) was found, or 2 cases among the 101 neonates infected with ZIKV during pregnancy. 72% of the pregnant women had ZIKV infection confirmed by RT-qPCR during gestation.
Conclusions
Results showed a low incidence of ZIKV-associated birth defects, stillbirth, and miscarriage, which contrasts with previous studies in other Brazilian regions. Previous exposure to yellow fever vaccine and/or multiserotype DENV infection could be implicated in the protection from ZIKV congenital infection.
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