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.
Percentage of serologically positive individuals among FS patients, endemic controls, and US controls for each of the eight antigen/antibody systems. This bar graph represents positive sera as defined by the cutpoint. FS patients (black bars), endemic controls (grey bars), and US controls (white bars) are shown.
