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How long protection can last after infection with the Coronavirus has become clear, Italian research

Kiderült, meddig tarthat a védettség koronavírus-fertőzés után, olasz kutatás

Nicola Mumuli, a physician at Fornaroli Hospital in Magenta, said in a study published in the Journal of. Internal Medicine of the American Medical Association (JAMA). Its findings are based on health data of more than 15,000 people.

The experts wrote in the editorial of the study that despite the encouraging results, it is important that people who have succumbed to Covid-19 get vaccinated as well.

Mitchell Katz wrote: “First, we do not know how long natural immunity will last. It is not clear whether disease-based immunity protects against new variants of the new coronavirus. There are broader societal benefits for each person who is vaccinated.” Specialist in the company that runs public hospitals and clinics in New York.

He added: “Achieving community immunity (the herd) through natural infection is a long and painful process, and in history only one human disease, which is smallpox, has been eliminated by vaccination and unnatural infection.”

In the Italian study, re-infection was defined as the emergence of a new infection at least 90 days after “complete absorption of the first infection”.

The Mumoli team searched for new infections among 15,000 Lombardians by conducting polymerase chain reaction (PCR) tests between early 2020 and February 2021.

About 13,000 people have had a negative Covid-19 test, and 1,579 have tested positive. In roughly a year, 3.9 percent of those who had never tested positive had contracted the coronavirus. In contrast, only 0.31% of those who contracted Covid-19 – five people – became infected a second time.

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Four of the five patients were either hospitalized or required hospital treatment, indicating that they were at risk of contracting a viral infection. Only one in five has become so ill that he needs hospital care, the researchers wrote in the study.

They also showed that more re-infections appeared over a long period of time: the average time between first infection and re-infection was 230 days, the researchers showed.

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