First female to male Zika case reported

New York City’s health department has reported the first female-to-male transmission of the Zika virus, which is most typically spread by the bite of an infected mosquito.

Transmission of the virus occurred on the day that a woman in her 20s returned to New York from an area with active Zika transmission and had a single event of unprotected sex with a male partner.

The man had not travelled outside the United States in the previous year.