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Work by researchers in Hong Kong founds that reinfection may be possible in rare cases.

Researchers in Hong Kong are reporting the first confirmed case of reinfection with the coronavirus.

“An apparently young and healthy patient had a second case of Covid-19 infection which was diagnosed 4.5 months after the first episode,” University of Hong Kong researchers said Monday in a statement.

The report is of concern because it suggests that immunity to the coronavirus may last only a few months in some people. And it has implications for vaccines being developed for the virus.

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WHO says plasma therapy still ‘experimental’ --plus other developments

GENEVA — The World Health Organization says using plasma from the recovered to treat COVID-19 is still considered an “experimental” therapy and that the preliminary results showing it may work are still “inconclusive.”

President Donald Trump on Sunday approved an emergency authorization of convalescent plasma for COVID-19 patients.

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Trump announces plasma treatment authorized for COVID-19

WASHINGTON (AP) — After expressing frustration at the slow pace of approval for coronavirus treatments, President Donald Trump announced Sunday the emergency authorization of convalescent plasma for COVID-19 patients.

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NURSING HOME: Experimental drug used to stop COVID-19 spread

The coronavirus crept into Heartland Health Care Center, a nursing home in Moline, Ill., on the last day of July, when a member of the nursing staff tested positive.

It was an ominous sign: The virus can spread through a nursing home in a flash. Older people — who are often sick and frail and need regular hands-on attention — are uniquely susceptible. Staff members who care for residents are at high risk of infection and of unintentionally spreading the virus.

Although nursing home residents make up just 1.2 percent of the United States population, they account for about 40 percent of Covid-19 deaths.

But this time, the nursing home was not defenseless. Heartland was the first facility to participate in a large clinical trial of a drug that might protect residents from the infection in nursing homes and assisted living facilities.

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Drug Pitched to Trump for Covid-19 Comes From a Deadly Plant

A plant extract trumpeted this week as a “cure” for Covid-19 by the leader of a pillow company is untested and potentially dangerous, scientists say.

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How does coronavirus spread at a concert? Germans do a test

BERLIN (AP) — Germany held a pop concert Saturday to see how those attending could spread coronavirus if they had it.

German researchers studying COVID-19 packed part of a Leipzig arena with volunteers, collecting data in a “real life” simulation of a pop concert but one with strict health and safety controls.

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