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A man is getting a Covid-19 test at a Covid-19 mobile testing site as people lined up at the Times Square in New York City, on Dec 6, 2021.Tayfun Coskun | Anadolu Agency | Getty ImagesThe omicron XBB.1.5 subvariant does not have any…

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"Hollywood's waiting to see if that was a fluke or if Apatow can officially write his own ticket," I said in my piece for "Nightline," back when I worked for ABC News.It wasn't a fluke. One of the fun biographical details Apatow shared…

Why are some people affected more severely by infections, including Covid? It’s a question that’s perplexed scientists but now they think they know part of the answer at least: autoantibodies.Not only might they help explain our…

The following is a summary of some recent studies on COVID-19. They include research that warrants further study to corroborate the findings and that have yet to be certified by peer review.Delta variant does not appear to make children…

In Israel’s COVID-19 wards, doctors are learning which vaccinated patients are most vulnerable to severe illness, amid growing concerns about instances in which the shots provide less protection against the worst forms of the…

What is clear is that a confluence of factors — including Delta’s contagiousness and the fact that people under 12 are not yet eligible to be vaccinated — is sending more children to the hospital, especially in areas of the country where…

Many patients being hospitalized have underlying health conditions like diabetes, obesity or high blood pressure that are risk factors for severe disease, he said. But some younger patients have none of those risk factors.“That’s what…

Physicians said almost all patients coming in this are unvaccinated, is younger and mainly in their 20s or 30s. Recently, a 28-year-old patient died of COVID-19 at CoxHealth…