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Published online 8 March 2002 | Nature | doi:10.1038/news020304-9

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Bacteria cause river blindness

Microbes, not the worms that carry them, aggravate the immune system.

Stowaway bacteria inside parasitic worms, and not the worms themselves, cause river blindness, according to new research. The finding could lead to better ways of preventing or treating the debilitating disease.

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