Texas officials said they believe four more cases of Zika have been transmitted in Texas, almost two weeks after announcing the first such case of a woman who lives in Brownsville, a city located on the Mexico border.
Texas state health officials said the new cases were identified in tests conducted after the first case was uncovered. Health officials believed the additional infections likely happened before mosquito-control efforts intensified. None of those infected is pregnant. Infection during pregnancy can lead to severe brainrelated birth defects.