The New York City report of female-to-male sexual transmission of Zika virus infection is the first documented case of sexual transmission of Zika from a woman to her sex partner and adds to the growing body of knowledge about the sexual transmission of Zika. All previously reported cases of sexually transmitted Zika virus infection have been spread from men to their sex partners.
CDC recommends that all pregnant women who have a sex partner who has traveled to or resides in an area with Zika use barrier methods every time they have sex or they should not have sex during the pregnancy. Although no cases of woman-to-woman Zika transmission have been reported, these recommendations now also apply to female sex partners of pregnant women.
CDC is currently updating recommendations for sexually active people in which the couple is not pregnant or concerned about pregnancy and for people who want to reduce personal risk of Zika infection through sex.
Article: Suspected Female-to-Male Sexual Transmission of Zika Virus - New York City, 2016, Alexander Davidson, MPH; Sally Slavinski, DVM; Kendra Komoto; Jennifer Rakeman, PhD; Don Weiss, MD, Morbidity and Mortality Weekly Report (MMWR), published 15 July 2016.