coronavirus

"There are so much toxic policies around Covid that they limit reasonable action," he said. "Of course it makes sense in different settings to ask for proof of vaccination, but that has become a political lightning rod."Dr. Frieden and…

Researchers have found evidence that a coronavirus epidemic swept East Asia about 20,000 years ago and was devastating enough to leave an evolutionary imprint on the DNA of people living today.The new study suggests that the region was…

"This additional data will play a big role in this," said Dr. Worobey.It is not clear why this valuable information was lost in the first place. Scientists can request that files be deleted by sending an email to the managers of the…

When did the coronavirus arrive in the US?The first infection was confirmed on January 21, 2020 in a Washington state resident who had recently returned from Wuhan, China. Shortly afterwards, experts concluded that the virus had been in…

If you haven't yet mastered the name of the latest variant of the coronavirus to turn nations upside down - B.1.617.2, as evolutionary biologists call it - then don't worry: the World Health Organization has proposed a solution.The group…

The intelligence on the three workers came from outside the United States intelligence agencies’ own collection, which means its veracity is more difficult to authenticate. The source of the information was unclear, but several American…

Immunity to the coronavirus lasts at least a year, possibly a lifetime, improving over time especially after vaccination, according to two new studies. The findings may help put to rest lingering fears that protection against the virus will…

It also had an unusual genetic mutation, a deletion in what is known as the N gene, which codes for an important structural protein. This deletion has not been documented in other canine coronaviruses, said Dr. Vlasova, but similar…

On December 29, a National Guard in Colorado became the first known case in the United States of a contagious new variant of the coronavirus.The news was unsettling. The variant, named B.1.1.7, had upset Britain, began to grow in Europe,…

People take their lunch break in the Raffles Place financial district in Singapore on May 5, 2021.Facebook Facebook Logo Log in to Facebook to connect with Roslan Rahman AFP | Getty ImagesSingapore will close most schools from Wednesday…