Zika virus has reached the US. Four people in Miami-Dade and Broward counties have been infected with the Zika virus by local mosquitoes, Florida health officials said today. These are the first known cases of the virus being transmitted by mosquitoes in the continental US. Zika cases have been reported in Delaware 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 ...