NIH Launches Prospective Study of Zika and HIV Co-infection During Pregnancy

Content From: HIV.govPublished: July 17, 20172 min read


Representation of the Zika virus, NIH 3D Print Exchange, National Institutes of Health.

Cross-posted from the NICHD Press Office


The National Institutes of Health has launched a study to determine the potential risks that infection with the Zika virus might pose for pregnancies in which the mother is also infected with HIV. At this point, little is known about whether Zika virus infection poses additional risks for maternal or infant health in pregnancies already complicated by HIV. Researchers hope the new study will provide information on whether infection with one of these viruses might increase the risk for infection with the other. Other concerns include whether Zika might interfere with medications that prevent HIV from being passed from a pregnant woman to her fetus and whether infection with the two viruses might increase the risk of damage to the fetal brain, as seen with Zika virus.

The researchers plan to enroll pregnant women who are infected with HIV only, with Zika virus only, with HIV and Zika, and women not infected with either virus. The study is enrolling participants in Puerto Rico and will soon recruit volunteers at sites in the continental United States and Brazil. Study participants will be provided with appropriate treatment. Women will be monitored throughout their pregnancies and for six months after giving birth. Infants will be observed for a year after birth. The study will be conducted in two parts: In the initial phase, the researchers aim to recruit roughly 200 pregnant women; if their efforts are successful, they will then try to enroll 1,800 additional pregnant women. The study is expected to run from 4 to 6 years.

The study is sponsored by NIH’s Eunice Kennedy Shriver National Institute of Child Health and Human Development.


Catherine Y. Spong, M.D., deputy director of the Eunice Kennedy Shriver National Institute of Child Health and Human Development, is available for interviews.

About the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD): NICHD conducts and supports research in the United States and throughout the world on fetal, infant and child development; maternal, child and family health; reproductive biology and population issues; and medical rehabilitation. For more information, visit NICHD’s website.

About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit