A British study conducted on health care workers found that those infected with Covid-19 were most likely to have immunity from the disease for at least five months, but there is evidence that those carrying antibodies may carry and spread the virus.
And the preliminary results reached by scientists at the Public Health Authority in England showed that it is rare for carriers of the antibodies 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.
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.