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.
Sampling places: nares (N); conjunctival sacs (O); anus (P); skin (S). For each combination of sampling places a confidence interval was marked which was calculated using the bootstrap method.
