An official website of the United States government
Here's how you know
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.
Boxplots of the seasonal distribution of malaria deaths during 2001–2010, Yunnan, China The boxplot displays the values of the 25th, 50th, and 75th percentiles.