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A UK study, conducted on healthcare workers, found that people infected with Covid-19 were most likely to be immune to the disease for at least 5 months, but there is evidence that those who carry antibodies can be carriers and spread the virus.
And preliminary results, achieved by scientists at the Public Health Authority in England, showed that it is rare for antibody carriers to be infected as a result of a previous infection, as the second infection only occurred. in 44 of the 6,614 people infected with the virus and included in the study.
Expressive
But experts have warned that the results mean those who contracted the disease in the first wave of the pandemic in the early months of 2020 are now at risk of contracting it again.
They also warned that people with acquired “natural immunity” from infection can carry the virus up their nose and throat and thus spread the infection.
Susan Hopkins, chief medical adviser at Public Health England, who co-led the study team, said: “We now know that most of those who have contracted the virus and developed antibodies are protected against reinfection, but it is not absolute protection and we do not yet know the duration of this protection. “.
A statement regarding the study said its results do not address antibodies or other immune responses to the currently launched Covid-19 vaccines or the efficacy of the vaccines. The statement said the issue of vaccine response will be discussed later this year.
The study includes tens of thousands of healthcare workers in Britain who have undergone regular checks since June to detect whether they have contracted COVID-19 again, as well as whether they are carriers of antibodies.
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