Birth Defects Seen in 5 Percent of Zika-Affected Pregnancies in U.S. Territories

About 5 percent of women in U.S. territories such as Puerto Rico who got infected with Zika virus while pregnant have gone on to have a baby with birth defects, federal researchers reported Thursday.

It’s the first look at how Zika affected pregnancies in the territories, which are more likely to be affected by Zika than the U.S. mainland because they have more tropical climates.

Image: teams from U.S. CDC and Brazilian health workers go into one of the epicenters of Zika in Brazil

A municipal health worker draws blood from 3-month-old Shayde Henrique, who was born with microcephaly, in Joao Pessoa, Brazil, Tuesday, Feb. 23, 2016.