Figure 1.
Weekly counts of organisms by date of specimen collection, England and Wales, 1991–2011: A) isolates; B) organism types.
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.