Mosquito (NPR)

Earlier this month, the Centers for Disease Prevention and Control (CDC) released a travel warning for pregnant women. They’ve issued the warning for 14 countries where the Zika virus has been confirmed to be transmitted.

Transmitted through bites of infected mosquitos, the Zika virus symptoms include fever, rashes and red eyes. It’s also been linked to birth defects.

Brazil was the first country to report birth defects linked to Zika. Specifically, the virus manifests as microcephaly, where newborns will have an unusually small head that leads to abnormal brain development. Over 2.4K cases of newborns affected by Zika were recorded in 2015, up from only 147 cases in 2014. This was a 1,532%+ year-over-year increase.

And the U.S. is no longer exempt from Zika’s reach: A baby with microcephaly was confirmed to have the virus. The baby was born in Hawaii last week.