Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Pregnancy incidence across antiretroviral therapy (ART) regimens according to (a) treatment at time of conception and (b) treatment had the study not intervened to refer participants for regimen change. NVP: Nevirapine; EFV: Efavirenz; PI: Protease Inhibitor (lopinavir/ritonavir).
