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.
Possible routes of transitions between different states of a farm. A susceptible farm (S) can become either a normally infected (IN) or a super shedding farm (ISS). A normally infected farm can become a super shedding farm, but a super shedding farm cannot recover to become a normally infected farm. Both the normally infected and super shedding farms can recover to become susceptible again.
