4 locally transmitted Zika cases reported in Florida

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(CNN) — Four individuals in Miami-Dade and Broward counties have been infected with the Zika virus by local mosquitoes, Florida health officials said Friday.

These are the first known cases of the virus being transmitted by mosquitoes in the continental United States.

The unidentified individuals had not traveled to a Zika-affected area, had not had sexual contact with someone who had traveled to a place where the virus is circulating and had no other known exposure to the virus.

U.S. health officials and experts have warned to expect local transmission of the virus from mosquitoes, but don’t expect widespread transmission, as has been seen in Puerto Rico and throughout the Americas.

More than 60 countries and territories are currently reporting local transmission of the virus

To date, there are 383 cases of the virus in Florida; 55 of them are pregnant women. On Thursday, the CDC reported 1,658 cases of the virus in the continental United States and Hawaii. None of those cases are a result of local mosquito transmission. Fifteen of those individuals were infected by sexual transmission, and there is one case of a laboratory-acquired infection.

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