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A British study, conducted in health care workers, found that people who contracted Covid-19 were more likely to have immunity against the disease for at least 5 months, but there is evidence that those who carry antibodies can carry and spread the virus.
And preliminary results, reached by scientists from the Public Health Authority of England, showed that it is rare for antibody carriers to become infected as a result of a previous infection, as the second infection occurred in only 44 of the 6,614 people who were infected with the virus and were included in the study.
Expressive
But experts warned that the results mean that those who contracted the disease in the first wave of the pandemic in the first months of 2020 may now be at risk of contracting it again.
They also warned that people with “natural immunity” acquired as a result of an infection can carry the virus in their nose and throat and therefore could 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 contracted the virus and developed antibodies are protected from reinfection, but it is not absolute protection and still we do not know the duration of this protection. “.
A statement regarding the study indicated that its results do not address the antibodies or other immune responses to the Covid-19 vaccines that are currently being released or the effectiveness 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.
