Figure 3.
(a) Spatially smoothed West Nile virus case points, (b) population‐weighted control points, and (c) incidence rates of human West Nile virus disease in South Dakota for 2004–2017.
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.