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.
Concordance of HPV infection between three pairs of anatomical sites (anal-penile, anal-oral, and oral-penile). Shown is single site infection, concordant infection with the same genotype at each of the two sites, and concordant infection but with different genotypes between the two sites.
