Original Article
Prevalence of seroprotection against the pandemic (H1N1) virus after the 2009 pandemic
Danuta M. Skowronski, Travis S. Hottes, Naveed Z. Janjua, Dale Purych, Suzana Sabaiduc, Tracy Chan, Gaston De Serres, Jennifer Gardy, Janet E. McElhaney, David M. Patrick and Martin Petric