Will I have to wear a mask after getting the Covid vaccine? - The science explained | Eurasia Diary - ednews.net

19 April, Monday

Will I have to wear a mask after getting the Covid vaccine? - The science explained

With Johnson & Johnson’s one-shot vaccine close to distribution in the US, the end of the pandemic seems a big step closer. But not everything will return to normal right away

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Public health authorities want people to keep wearing masks and social distancing, even after they receive a vaccine. This might seem counterintuitive – after all, if someone gets a vaccine, aren’t they protected from the coronavirus?
The answer is complicated: the vast majority of people who are vaccinated will be protected from Covid-19, the disease caused by the SARS-CoV-2 virus. However, vaccinated people may still be able to transmit the virus, even though they do not display any symptoms.
“We know now the vaccines can protect, but what we haven’t had enough time to really understand is – does it protect from spreading?” said Avery August, professor of immunology at Cornell University.
That is because the the SARS-CoV-2 virus may still colonize the respiratory tract, even as systemic immune cells protect the overall body from the disease it causes – Covid-19.
The coronavirus vaccine is injected deep into the tissue.
It prompts our bodies to form antibodies to fight the virus systemically.
Some of those systemic antibodies circulate to other parts of the body, and protect us against severe disease.
Coronavirus typically enters the body through our nasal cavities.
Scientists are still studying whether the body produces enough antibodies in the nose to prevent the virus from proliferating there.
Meanwhile the virus will also try to proliferate in other parts of the body, like our respiratory system.
Systemic antibodies will likely kill them off. That means a vaccinated person probably won’t develop symptoms, even if the virus multiplies in the nose.
But vaccinated people may still carry enough virus in the nose to infect others.
So if a vaccinated person breathes or sneezes they could still infect someone else, even if they feel fine.
This means vaccinated people still have to wear masks and socially distance, even if their individual risk is much lower.

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