Fig. 2.
a Comparison of breakdown of cases in January to May 2019 and 2020. b Comparison of breakdown of cases in March and April 2019 versus 2020
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.