New York City’s health department on Friday reported the first documented case of sexual transmission of Zika from a woman to her male partner, raising new concerns about the spread of the virus, which is typically contracted through mosquito bites.
Scientists say it may take years to fully understand how long individuals who are infected with Zika are capable of transmitting the virus, the first mosquito-borne disease ever shown to cause birth defects after a pregnant woman becomes infected. U.S. researchers have begun studying how long the virus can survive in semen to gauge the risk.
