W.H.O. Dismisses Covid Origins Investigator for Sexual Misconduct

The World Health Organization dismissed a lead investigator into the origins of the Covid-19 pandemic “following findings of sexual misconduct,” according to an agency spokeswoman. Peter K. Ben Embarek, an expert on food safety and animal-borne diseases, was dismissed last year; the dismissal was reported by The Financial Times on Wednesday. The findings stem from events that took place in 2015 and 2017, Marcia Poole, the W.H.O. spokeswoman, said in an email. The agency’s investigations team first learned about the allegations in 2018. At the time, “there was a significant…

What Are Raccoon Dogs?

On Thursday, scientists unveiled new data on the possible origins of the Covid-19 pandemic — and put a strange, squat creature squarely in the spotlight. Meet the raccoon dog; it earns its name from its black facial markings, which give the animal a masked appearance and a more-than-passing resemblance to those infamous raiders of urban trash cans. The animals were at least occasionally sold at the Huanan Seafood Wholesale Market, where many virologists suspect that the Covid-19 pandemic may have started. Scientists had previously announced that swabs from the market…

Health Experts Warily Eye XBB.1.5, the Latest Omicron Subvariant

Three years into the pandemic, the coronavirus continues to impress virologists with its swift evolution. A young version, known as XBB.1.5, has quickly been spreading in the United States over the past few weeks. As of Friday, the Centers for Disease Control estimated that it made up 72 percent of new cases in the Northeast and 27.6 percent of cases across the country. The new subvariant, first sampled in the fall in New York State, has a potent array of mutations that appear to help it evade immune defenses and…