Covid-19 infection gives some immunity, but virus can still be spread, study finds

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People who have had Covid-19 are highly likely to have immunity to it for at least five months, but there is evidence that those with antibodies may still be able to carry and spread the virus, a study of British health care workers has found.

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Preliminary findings by scientists at Public Health England showed that reinfections in people who have Covid-19 antibodies from a past infection are rare — with only 44 cases found among 6,614 previously infected people in the study.But experts cautioned that the findings mean people who contracted the disease in the first wave of the pandemic in the early months of 2020 may now be vulnerable to catching it again.

They also warned that people with so-called natural immunity — acquired through having had the infection — may still be able carry the SARS-CoV-2 coronavirus in their nose and throat and could unwittingly pass it on. “We now know that most of those who have had the virus, and developed antibodies, are protected from reinfection, but this is not total and we do not yet know how long protection lasts,” said Susan Hopkins, senior medical adviser at PHE and co-leader of the study, whose findings were published on Thursday.

“This means 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 you could acquire an infection and transmit to others.”

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The vaccines also do not stop the virus from spreading, nothing will. We will never defeat covid 19, just like we never defeated flu. Flu also mutates every year.

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