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.
Maps were created with simplemaps.com. A, Participants enrolled by zip code. Data for any zip code representing a post office were collapsed into the data for the zip code of the post office’s surrounding geographic area. B, Seropositivity by zip code. Only zip codes with at least 10 participants are shown.
