Virology

Demography

Sexual transmission

Computer science

Virus

Sociology

Microbicide

Zika virus

Transmission (telecommunications)

Human immunodeficiency virus (HIV)

Medicine

Telecommunications

Clinical Infectious Diseases

We report on 9 cases of male-to-female sexual transmission of Zika virus in the United States occurring January-April 2016. This report summarizes new information about both timing of exposure and symptoms of sexually transmitted Zika virus disease, and results of semen testing for Zika virus from 2 male travelers.

Male-to-Female Sexual Transmission of Zika Virus—United States, January–April 2016