science

It's campylobacter.

The study also suggests that vast, densely populated chicken flocks may act as ecological "pathogen sponges", absorbing and amplifying bacterial strains from multiple sources. Mathematical modelling showed that once chicken populations reach a critical scale, strains originating in wild birds can become self-sustaining within poultry populations, even when poorly adapted to their new host.

A previous study from the IOI found that 80% of human Campylobacter infections in Oxfordshire are associated with poultry meat, and that many of these infections are resistant to antibiotics.