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Medium Coronavirus Blog
A blog from Medium for Covid-19 news, advice, and commentary.

Immunity

In Medium Coronavirus Blog. More on Medium.

“Herd immunity” has been a hot topic since day one of the pandemic. The term refers to a certain percentage of people that must be immune in order to block…


The case is one in 23 million

People wearing masks go through ticket barrier at the railway station in Hong Kong.
People wearing masks go through ticket barrier at the railway station in Hong Kong.
Photo: Li Zhihua/China News Service/Getty Images

Scientists in Hong Kong reported today the first confirmed case of reinfection with SARS-CoV-2, the virus that causes Covid-19. Since the beginning of the pandemic, there have been concerns about long-term immunity to the novel coronavirus, and several possible cases of reinfection were reported in the media. But until now, none were confirmed scientifically.

The question has always been whether reports of a person testing positive, recovering from the virus and testing negative, and then testing positive again weeks or months later is because of faulty testing, “dead” viral RNA lingering in the body, a reemergence of the same infection…

Medium Coronavirus Blog

A blog from Medium for Covid-19 news, advice, and commentary.

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