Scientists Just Found What's Fueling the World's Top Food Poisoning Bug
Summary
Scientists have found that the rapid growth of large-scale poultry farming has helped spread the bacteria Campylobacter jejuni, a leading cause of food poisoning worldwide. Their study shows that dense chicken farms create ideal conditions for the bacteria to thrive and develop resistance to antibiotics, increasing public health risks.Key Facts
- The global number of chickens has grown seven times since the 1960s, reaching about 31 billion birds.
- Campylobacter jejuni causes about 1.9 million foodborne illnesses and 13,000 hospitalizations annually in the U.S.
- Researchers studied nearly 2,800 bacterial samples from chickens and wild birds in 30 countries between 1979 and 2024.
- Large poultry farms act like "pathogen sponges," allowing bacteria to spread and evolve quickly.
- The bacteria have developed traits that help them survive in farm environments, including antibiotic resistance.
- In the U.K., Campylobacter causes more than three times as many stomach illness cases each year as all other foodborne bacteria combined.
- About 80% of Campylobacter infections in a region of England were linked to poultry meat.
- Proper food handling and cooking can reduce the risk of infection, though antibiotic-resistant infections are a growing concern.
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