Multidrug resistance and high genotypic diversity in Campylobacter upsaliensis from household dogs in Metro Manila, Philippines.

Campylobacter upsaliensis is an emerging pathogen implicated in human gastroenteritis. Contact with pets, especially dogs, has been identified as a risk factor. Fourteen (14) C. upsaliensis isolates were obtained from household dogs in Metro Manila, Philippines. Antimicrobial susceptibility testing (AST) determined high resistance to ciprofloxacin (92.86%), erythromycin (100%), and tetracycline (100%). Multilocus sequence typing (MLST) identified 14 novel sequence types and 1 novel clonal complex, which is suggestive of a high genotypic diversity within C. upsaliensis. AST results indicate that antimicrobial stewardship and education of pet owners should be emphasised in veterinary practice.