Journal of Veterinary Medical Science
Online ISSN : 1347-7439
Print ISSN : 0916-7250
ISSN-L : 0916-7250
Prevalence of antimicrobial resistance in bacteria isolated from Great Cormorants (Phalacrocorax carbo hanedae) in Japan
Justice Opare ODOIMichiyo SUGIYAMAYuko KITAMURAAkiko SUDOTsutomu OMATSUTetsuo ASAI
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2021 Volume 83 Issue 8 Pages 1191-1195


Wild birds are recognized as disseminators of antimicrobial-resistant (AMR) bacteria into the environment. Here, we isolated AMR indicator bacteria from 198 Great Cormorant cloacal swabs collected in Shiga (n=90), Oita (n=52), Gifu (n=29), and Gunma (n=27) Prefectures, Japan, in 2018 and 2019. In total, 198 Aeromonas spp. and 194 Escherichia spp. were isolated, and their antimicrobial susceptibility was examined. Aeromonas spp. were resistant to colistin (8.6%), nalidixic acid (4%), and other antimicrobials (<2%), with 3.0% positivity for mcr-3. Escherichia spp. showed resistance to colistin (3.1%), ampicillin (2.6%), tetracycline (2.1%), and other antimicrobials (<2%). This study shows the presence of AMR bacteria in Great Cormorants, indicating that these birds potentially disseminate AMR bacteria.

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