Abstract
Vibrio spp., known as significant marine pathogens, have become more prevalent due to global warming. Antibiotics released into the environment drive Vibrio resistance. The increasing consumption of seafood leads to more interactions between Vibrio and humans. Despite this concerning trend, there remains a lack of large-scale surveillance for Vibrio contamination across various types of food. This study isolated 4027 Vibrio strains, primarily comprising V. parahaemolyticus and V. alginolyticus, in 3581 fresh shrimp and meat products from 2013 to 2022. The Vibrio strains showed increased resistance to important antibiotics, especially β-lactams used to treat foodborne bacterial infections. Whole genome sequencing of 591 randomly chosen strains showed a strong correlation between antibiotic resistance and genotypes in Vibrio. Notably, various ESBL genes have evolved over the past 8 years, with blaVEBs being the most dominant. Additionally, carbapenemase genes, such as blaNDM-1, have become increasingly prevalent in recent years. Various mobile genetic elements, including IncQ and IncA/C plasmids, recoverable in Vibrio, facilitate the transmission of crucial β-lactamase genes. These data provide insights into the evolutionary traits of antimicrobial resistance in foodborne Vibrio strains over a decade. Policymakers should consider these findings when devising appropriate strategies to combat bacterial antimicrobial resistance and safeguard human health.
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