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.
Epidemiology curve of the dengue outbreak during the introduction of WNV in Puerto Rico. The second arrow depicts the seroconversion of the sentinel chickens in the Ceiba region of Puerto Rico. The first arrow indicates the date the dengue outbreak was declared. The samples from this study correspond to July through December of 2007.
