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.
Rates of positive results among clinical specimens submitted for WA1 IgG or B. microti IgG testing over a 2-year period (2008-2009). Horizontal bars connected by a vertical line represent the 95% confidence interval.