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.
Distribution of age, TST, and HIV status of TB index cases and contacts enrolled in a TB household contact study in Kampala, Uganda between 2002–2006. HIV = human immunodeficiency virus; TST = tuberculin skin test; TSTC = tuberculin skin test converter at 3 months; PTST− = persistently TST negative at 12 and 24 months.
