How common is covid-19 reinfection? A recent study answers

Un centro de detección de covid-19 en Estados Unidos.


A covid-19 detection center in the United States.

Photo: Spencer Platt / Getty Images

A new study conducted in Qatar and published in the New England Journal of Medicine indicates that people who are reinfected with covid-19 have a 90% lower chance of ending up hospitalized or dying.

Among 353,326 people who contracted the disease in Qatar, there were considerably few reinfections, and those that occurred were mostly mild.

In the country, the first wave occurred between March and June 2020, and when it ended, around the 40% of the population presented antibodies detectable. Then came two more waves before the eruption of the delta variant.

Then, the experts concluded that 1,304 reinfections were registered, with a median time of nine months between both infections.

And of those who once again presented the disease, only four cases required going to the hospital, but none needed intensive care.

In the initial cases, there were 28 critics and seven deaths; there were no deaths among the reinfected group.

The study highlights that it refers to what happened in Qatar, but it is not known if this behavior of the virus is repeated in other parts of the world. Another study that took place in Denmark reveals that most of those reinfected were people 65 years of age and older.

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