Summary and Implications
Pandemic H1N1 (pH1N1) influenza was first reported in the United States in April 2009. Since then, the virus has spread worldwide in both human and swine populations. Currently, pH1N1 influenza is the most common H1N1 virus infecting pigs in the United States. Vaccination of swine against pH1N1 represents the single best method of protecting against infection.
Iowa State University
Vander Veen, Ryan Lee; Mogler, Mark; Kamrud, Kurt I.; and Harris, D.L. Hank
"Rapid Development of Efficacious Swine Vaccines for Pandemic
Animal Industry Report:
AS 658, ASL R2675.
Available at: https://lib.dr.iastate.edu/ans_air/vol658/iss1/7