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.
Number of different infectious agents per European zone, rat species and taxonomic level. Where a genus is known to include species that cause disease in humans but no species is given, the genus is counted once for each habitat and rat species.
