Table 6.
Relative risk of suspected water
*Water was consumed during lunch time (12:00-13:00); †Number of subjects; ‡Attack rate.
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.