Oxytetracycline-resistant identified in commercial beekeeping operations in Saskatchewan using pooled honey sampling.

American foulbrood (AFB) is an infectious disease of honey bee brood caused by the endospore-forming bacterium spores are resilient in the environment, thus colonies with clinical signs of AFB are often destroyed by burning to eradicate the causative agent. To prevent outbreaks of AFB, oxytetracycline metaphylaxis is widely used in North America, resulting in sustained selective pressure for oxytetracycline resistance in . To determine if antimicrobial resistance (AMR) is present among isolates from commercial beekeeping operations in Saskatchewan, Canada, we performed antimicrobial susceptibility testing of 718 samples cultured from pooled, extracted honey collected from 52 beekeepers over a 2-y period, 2019 and 2020.