Month: June 2021

“You just told the unvaccinated, ‘Yeah, get vaccinated, it’s so scary, but of course, you’ll still have to mask because it’s so scary,’ ” said Monica Gandhi, professor of medicine at the University of California at San Francisco. “If I were an unvaccinated person who was debating whether to get vaccinated, I would think, ‘Oh wow, there’s no point, looks like the delta variant would break through the vaccine anyway.’ ”

The disease may have killed almost half of Europe's population during the Middle Ages, when it was known as the Black Death. It affects humans and other mammals, and is often transmitted to humans by fleas that live on rodents. A joint German-Latvian research team detected the oldest known strain of the bacteria that causes the plague --Yersinia pestis -- in the remains of a hunter-gatherer who lived in present-day Latvia 5,000 years ago. The presence of the strain showed that the bacteria emerged thousands of years earlier than scientists had previously thought -- shedding light on the early roots of the plague, according to a study published in the scientific journal Cell Reports on Tuesday. The man, who was estimated to be aged between 20 and 30, likely died after he was bitten by a...

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