Fig. 8.
Cumulative probability of the proportion of pigs screened ELISA-positive for influenza A antibodies in herds (n = 1028) diagnosed positive for influenza A(H1N1)pdm09 with at least five pigs sampled.
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.