Wednesday, November 3, 2010

Plague came from China: scientists

AFP - The first outbreak of plague occurred in China more than 2,600 years ago before reaching Europe via Central Asia's "Silk Road" trade route, according to a study of the disease's DNA signature.

The findings flesh out long-held suspicions about the Chinese origins of the plague, which killed an estimated third of Europe's population in the Middle Ages.

An international team of scientists sequenced 17 strains of Y. pestis, building a genetic "family tree" of pathogens that mutated from a common ancestor.

"The results indicate that plague appeared in China more than 2,600 years ago," France's Museum of Natural History, which took part in the research, said. mountainous

It then spread towards Western Europe along the Silk Road, starting more than 600 years ago, and then to Africa, probably by an expedition led by Chinese seafarer Zhang He in the 15th century, it said.

Plague came to the United States from China via Hawai in the late 19th century, according to the molecular evidence.

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