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.
Comparison of estimates for the number of infections per smear-positive TB case per year. Estimates from Styblo (shaded bar), those derived from successive prevalence surveys in van Leth et al. (grey points), and those derived by the present model (black points) are shown. TB = tuberculosis.
