Zika and microcephaly: first trimester of pregnancy most critical

A new data analysis from the 2013-2014 Zika epidemic in French Polynesia by scientists

from the Institut Pasteur, Paris, and their French Polynesian colleagues has confirmed the incidence of grouped cases of microcephaly and quantified the risk of microcephaly associated with the virus. Using innovative mathematical modeling techniques, their research shows that the risk of microcephaly is around 1% for a fetus or newborn whose mother has been infected by the Zika virus during the first trimester of pregnancy. The study, led by Arnaud Fontanet (Emerging Diseases Epidemiology Unit, Institut Pasteur, Paris) and Henri-Pierre Mallet (Bureau de Veille Sanitaire, Direction de la Santé, Papeete, Tahiti, French Polynesia) has been published in The Lancet* on March 15, 2016.

Read more on the Institut Pasteur website.

*: Cauchemez S, Besnard M, Bompard P, Dub T, Guillemette-Artur P, Eyrolle-Guignot D, Salje H, Van Kerkhove MD, Abadie V, Garel C, Fontanet A, Mallet HP, Association between Zika virus and microcephaly in French Polynesia, 2013-2015, The Lancet, March 15, 2016.