Covid survivors may not get reinfected after recovery, says study

Many people are getting worried about possibility of having infectionn again, even if they recover from Covid-19.

But some recent studies suggest that there is no confirmation about the reocurring of the infection. A study involving monkeys on the other hand says that the recovered persons could get resistance against reinfection.

A team of researchers used rhesus macaques to explore the potential for COVID-19 reoccurrence. They ree-xposed the monkeys to SARS-CoV-2 after their symptoms had disappeared.

Linlin Bao, from the Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, and colleagues infected four adult Chinese rhesus macaques with SARS-CoV-2 using tissue culture infectious doses.

The monkeys also briefly exhibited other clinical signs of the illness, such as a loss of appetite, increased respiration rate, and hunched posture. But after three days, the swabs showed declining of viral loads.

“Altogether, these data suggested that the three animals were considered as recovering from SARS-CoV-2 infection, similarly meeting the clinical discharge evaluation criteria,” they write.

Twenty-eight days after the initial infection, the scientists reinfected two of the three remaining monkeys, using the same viral dose. It also found that the monkeys did not show the viral infection.

“Therefore, our results suggested that the monkeys with SARS-CoV-2 infection after recovery could not be reinfected with the same strain. Longitudinally, the monkey [that had] undergone single infection in this study did not appear [to show signs of] recurrence after the recovery, either,” write the authors.


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