Aerial insecticide spraying to combat mosquitoes carrying the Zika virus is underway in Miami Beach.

Florida Gov. Rick Scott says there are 10 new infections of the Zika virus likely transmitted by mosquitoes, bringing the total in the state to 14.

Mosquitoes have apparently begun spreading the Zika virus on the U.S. mainland for the first time, health officials said Friday, a long-feared turn in the epidemic that is sweeping Latin America and the Caribbean.