Figure 4.
Monthly number of searches for the topics, ● “West Nile”, ● “Zika”, and ● “Malaria”. The value is relative to the month with the largest number of searches.
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.