Fig 1. Cumulative weekly human WNV cases (red bars) and mosquito infection rate (blue line) from 2005–2016 in Cook and DuPage counties, Illinois.
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.