Figure 1.
Estimated incidence and prevalence of, and number of deaths due to, tuberculosis in 1997 (data from World Health Organisation3)
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.