In those who have antibodies, the coronavirus can remain in the nose and throat.

People who become infected with the coronavirus may pass the virus on to others because they may have the infection in their throat and nose. Nevertheless, those who relapse remain immune to COVID-19 for several months.

This is evidenced by data from a  study by the British Institute of Public Health.

“Studies have shown that people who have been infected with COVID-19 before are more likely to be protected from re-infection for several months, but experts warn that people with immunity can still carry the virus in the nose and throat and therefore there is a risk of transmission to other people,” the study said. 

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Naturally acquired immunity provides 83% protection against re-infection with coronavirus compared to people who did not have COVID-19. Immunity persists for at least five months from the time of the first illness, the study said.

The results of the study showed that among the 6,614 health professionals who had antibodies, only 44 developed a “potential” infection. In parallel, the study also concluded that the infection provides 94% protection against symptomatic reinfection and 75% immunity against asymptomatic reinfection.

The researchers clarified, however, that the cases of reinfection found in the investigation are considered “potential” pending for genetic analysis to validate the information.

The experts refused to confirm an extrapolation of these data to an older age group because the study participants were between the ages 35 to 54 years, thus not integrating the age groups at higher risk

The investigation will be extended by 12 months to determine the duration of immunity, analyse the impact of the new variant found in the UK and monitor the protection of study participants who have already received the covid-19 vaccine.

Covid -19 pandemic has caused at least 1,979,596 deaths resulting from more than 92.3 million cases of infection worldwide, according to a report prepared by AFP.