PHE announces results of study into naturally acquired immunity from coronavirus (COVID 19)

PHE announces results of study into naturally acquired immunity from coronavirus (COVID 19)

Public Health England (PHE) has published the results of a study indicating that infection from coronavirus (COVID 19) results in some naturally acquired immunity for at least five months. However, this has come with a warning from experts that those people may still be able to transmit the virus, despite not suffering reinfection, as they can carry it in their throat and nose. PHE therefore has stressed the importance of everyone continuing to follow the rules, including those that have already had the virus.

PHE’s SARS-COV2 Immunity and Reinfection Evaluation (SIREN) study used regular antibody and PCR testing to examine the likelihood of reinfection from coronavirus. Further research is continuing to clarify the figures, but the study currently estimates the rate of protection from reinfection to be 83%. This is thought to last for five months on average.

The SIREN study leaders have highlighted that this analysis took place before the new, more contagious, variant of coronavirus became prevalent. They also stressed that this study has no bearing on immune responses from vaccinations.

Speaking about the study, the Senior Medical Advisor at Public Health England, Professor Susan Hopkins, said: ‘even if you believe you already had the disease and are protected, you can be reassured it is highly unlikely you will develop severe infections but there is still a risk that you could acquire an infection and transmit to others'.

Source: Past COVID-19 infection provides some immunity but people may still carry and transmit virus

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