Figure 2From: Spatio-temporal cluster analysis of county-based human West Nile virus incidence in the continental United StatesLog-adjusted population density (people per km2) and US counties with higher than expected WNV human incidence. On the top is a map of the continental United States with log-adjusted population density (people per km2). On the bottom is a map that displays the counties of the US with regards to how many years each county had higher than expected rates of human WNV incidence.Back to article page