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.
A, Transit time for all sputum specimens referred to the national tuberculosis reference laboratory (NTRL) for testing before initiation of public-private partnership (PPP)–supported activities to strengthen the tuberculosis specimen referral system (January–December 2008). B, Transit time for all sputum specimens referred to the NTRL after PPP-supported activities to strengthen the tuberculosis specimen referral system (January–December 2011).
