Scientists Just Found What’s Fueling the World’s Top Food Poisoning Bug

Key Points:

• Global chicken populations have increased seven-fold since the 1960s, coinciding with a more than 100-fold rise in the spread of Campylobacter jejuni, the leading bacterial cause of foodborne gastroenteritis worldwide.
• Intensive poultry farming practices, characterized by high-density bird populations, have created ideal conditions for Campylobacter to spread, diversify, and adapt, including developing antimicrobial resistance.
• The study analyzed nearly 2,800 bacterial genomes from 30 countries over several decades, revealing that commercial flocks act as ecological "pathogen sponges," facilitating the evolution and transmission of Campylobacter strains.
• Campylobacter infections are increasing globally, with significant public health impacts in countries like the UK, US, France, Canada, and Australia, and rising antibiotic resistance complicates treatment.
• Researchers urge the poultry industry to adopt enhanced biosecurity measures and aim beyond contamination management, using successful Salmonella control efforts as a model to reduce Campylobacter risks.