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.
Sensitivity estimates and corresponding 95% CI (error bars) of the preenrichment streak method, categorized by the gold standard concentration (experiment 1). Estimates are presented as the percentages of samples with a confirmed E. coli O157 colony on the preenrichment direct streak plate when only two colonies were tested.
