Tribe's resistance could help CJD

Darwinian natural selection could help halt human "mad cow disease", experts say after finding a tribe impervious to a related fatal brain disorder.

The Papua New Guinea tribe developed strong genetic resistance after a major epidemic of the CJD-like disease, kuru, spread mostly by cannibalism.

Medical Research Council experts assessed more than 3,000 survivors of the mid-20th Century epidemic.

Their findings appear in the New England Journal of Medicine.

Kuru, a prion disease similar to CJD in humans and BSE in animals, was transmitted at mortuary feasts where - until the practice was banned in the late 1950s - women and children consumed their deceased relatives as a mark of respect and mourning.

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