Carriage of , , and Antimicrobial-Resistant, Nonspecific by Waterfowl Species Collected from Three Sources in Southern Ontario, Canada.

Wild birds are considered a potential source of zoonotic pathogens. We report on the occurrence of and antimicrobial-resistant, nonspecific in ducks, grebes, and swans obtained by convenience while conducting related research with Canada Geese (). Samples were obtained in southern Ontario, Canada, between 2013 and 2015 from hunter-caught birds, birds submitted for postmortem diagnosis, and fresh feces from live birds in parks. A secondary objective was to characterize genotypes using comparative genomic fingerprinting. and isolates were tested for susceptibility to 15 antimicrobials using the Canadian Integrated Program for Antimicrobial Resistance Surveillance test panel. A total of 71 samples were collected from 15 different waterfowl species. We detected and in 17, 3, and 84% of samples, respectively. Ten unique subtypes were identified, some of which had been identified previously in water, poultry, waterfowl, and human clinical cases. Both isolates were pansusceptible and 15% of isolates were resistant to at least one antimicrobial, including resistance to antimicrobials of highest importance to human health. Source attribution studies should examine the role of waterfowl in the dissemination of these pathogens.