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Parkinson’s disease could be prevented by a recent tetanus vaccine

People who have had a recent vaccine against tetanus appear to be less likely to develop Parkinson’s disease, suggesting that the bacterial infection is involved in the condition

By Clare Wilson

29 May 2024

Magnetic resonance imaging scan showing plaques (dark areas) in the centre of the brain of someone with Parkinson's disease

Magnetic resonance imaging scan showing plaques (dark areas) in the centre of the brain of someone with Parkinson’s disease

ZEPHYR/SCIENCE PHOTO LIBRARY

Parkinson’s disease could be caused by an infection with tetanus bacteria, according to a radical new idea.

The claim stems from the finding that people who have recently been vaccinated against tetanus to prevent a wound infection are half as likely to later be diagnosed with Parkinson’s. “The closer to the vaccine date, the less likely individuals are to get diagnosed with Parkinson’s disease,” says…

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