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.
Number of annual cases vs. the year of onset of symptoms, 2008–2012, for (A) Ehrlichia chaffeensis infections and (B) Ehrlichia ewingii infections in the United States. The number of incident cases is from the Nationally Notifiable Diseases Surveillance System.
