Carers sick with Covid would be protected against reinfection for several months, study finds

The vast majority of caregivers who have already contracted Covid-19 are protected against re-infection for a period of at least five months, shows a British study by researchers from the public health agency Public Health England.

According to researchers from the public health agency Public Health England, caregivers who have already been sick with Covid would, in a very large majority, be protected from reinfection for at least five months, they reveal in a published study Thursday, January 14, which has not yet been reread by independent researchers.

During this study, scientists identified 44 potential re-infections among 6,614 healthcare workers who already had antibodies to Covid-19 during a five-month period from June to November 2020. Compared to those who had not yet been exposed to Sars-CoV-2, this represents a protection of 83%, concludes this study.

But British researchers warn that even though the antibodies appear to prevent falling ill with Covid-19 again, preliminary data from the next stage of their study suggests that some of the participants are carriers of significant amounts of the virus and could still pass it on to other people. “We now know that most of those who have had the virus, and developed antibodies, are protected against reinfection, but this protection is not complete and we do not yet know how long it lasts. And, point very. important, we believe that people can still transmit the virus “, sums up the study’s lead author, Susan Hopkins.

Independent experts praised the quality of this study, which recruited nearly 20,800 caregivers, including front-line hospital staff to care for Covid-19 patients, invited to be tested regularly to see if they were carriers. virus or had developed antibodies, a sign of an older infection. The study suggests that the rates of protection conferred by a natural infection “are comparable to those of vaccines against Covid-19”, also emphasizes Julian Tang, honorary professor of virology at the University of Leicester.

[avec AFP]

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