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.
Sample locations (numbers) correspond to the numbers in Table 1. Each circle represents the types of HPeV found (color) at each location. The number of pie parts of one color represents the number of samples in which this HPeV type was detected over time.
