Covid-19 News: Live Updates – The New York Times

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Credit…Erin Schaff/The New York Times

More than 38 million people worldwide have been infected with the coronavirus, and as of Monday, fewer than five of those cases have been confirmed by scientists to be reinfections.

Nevertheless, fears of repeat bouts of illness, impotent vaccines and unrelenting lockdowns were raised anew when a case study about a 25-year-old man in Nevada was published on Monday. The man, who was not named, became sicker the second time that he was infected with the virus, a pattern the immune system is supposed to prevent.

And rare as these cases may be, they do indicate that reinfection is possible, said Akiko Iwasaki, an immunologist at Yale University, who wrote a commentary accompanying the Nevada case study, published in The Lancet Infectious Diseases.

The New York Times asked more experts what is known about reinfections with the coronavirus.

It’s impossible to know how widespread the phenomenon is, they told us. To confirm a case, scientists must look for significant differences in the genes of the two coronaviruses causing both illnesses. In the U.S., many people were not tested unless they were sick enough to be hospitalized. Even then, their samples were usually not preserved for genetic analysis, making it impossible to confirm suspected reinfections.

Plus, a resurgence of symptoms doesn’t prove reinfection. More likely, these are people experiencing symptoms connected to the original infection.

But people with a second bout may pass the virus to others. An infection in a patient in Hong Kong was discovered only because of routine screening at the airport, and the man was isolated in a hospital even though he had no symptoms. But his viral load was high enough that he could have passed the virus to others.

Credit…Tom Stromme/The Bismarck Tribune, via Associated Press

Uncontrolled coronavirus outbreaks in the U.S. Midwest and Mountain West have strained hospitals, pushed the country’s case curve to its highest level since August and heightened fears about what the winter might bring.

Sixteen states each added more new cases in the seven-day period ending Monday than they had in any other weeklong stretch of the pandemic. North Dakota and South Dakota are reporting more new cases per person than any state has previously. And in Wisconsin, home to 10 of the country’s 20 metro areas with the highest rates of recent cases, crews are preparing a field hospital at the state fairgrounds.

“While we are hopeful we can flatten the curve enough to never have to use the facility, Wisconsinites across our state are struggling and they are rightfully scared of this virus,” Gov. Tony Evers wrote to legislative leaders this week in a letter seeking support for his mask order and limits on public gatherings.

About 50,000 new cases are being reported each day on average in the United States for the

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