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Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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ScienceShot: Europe's Black Death Spawned Modern Plague Strains
12 October 2011 2:21 pm
These skeletons—excavated in the 1980s from a 14th century graveyard in London—belonged to six of the estimated 30 million people who died from the Black Death, the plague epidemic that swept Europe between 1347 and 1351. Researchers have now used teeth from the same graveyard—home to some 2500 plague victims—to reconstruct 99% of the genome of Yersinia pestis, the bacterium that causes plague. An analysis of that microbial DNA, published online today in Nature, suggests that Y. pestis strains currently circulating around the world are all descendents of the medieval strain, which is believed to have killed 30% to 60% of Europe's population. The 14th century genome closely resembled those of modern strains and did not have any obvious unique mutations that might explain its unprecedented virulence. Other factors—such as the population's susceptibility or the ecology of rodents and fleas, which help spread the disease—were probably responsible for the medieval massacre, the team concludes.
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