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.
Summary of the number of annual cases of Ehrlichia chaffeensis (N = 3,593), reported through Case Report Forms, United States, 2008–2012. The annual number of cases is subdivided into polymerase chain reaction (PCR)-positive cases, PCR-negative cases, and cases for which PCR was not performed. The annotation above each vertical bar indicates the annual percent of reported cases diagnosed by PCR.
