Last week, the Centers for Disease Control and Prevention reported something it had been anticipating for months: Zika is now spreading locally in the United States.
The announcement came after the agency and the Florida Department of Health identified four individuals that officials believe contracted the disease from mosquitos in Miami carrying the virus.
By Monday, Florida officials had confirmed another 10 cases of Zika in the Miami area, leading the CDC to take the unusual step of issuing a travel advisory for pregnant women, or women hoping to become pregnant, to avoid a 1-square-mile area north of the city's downtown. It was a first time the CDC has ever told pregnant women to steer clear of a specific place in the continental United States.
