Why Covid testing and "non spreading passports" wi
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Experts don’t yet know if Covid-19 vaccines prevent the virus’ spread—and it may take months to find out
https://www.smithsonianmag.com/science-nature...180977054/
Quote:
Since scientists haven't yet found evidence that the vaccines provide mucosal immunity, someone who is vaccinated and has no symptoms of illness may be carrying the live SARS-CoV-2 virus and spreading it to others when they cough, breath or sneeze.
How long is the CDC estimating COVID-19 vaccine protection will last?
https://www.wbrc.com/2021/02/12/how-long-is-c...will-last/
Quote:
Fully vaccinated people don’t need to quarantine after COVID-19 exposure. That’s the new guidance from the Centers for Disease Control. But, if it’s been longer than three months since your last shot, you’ll still have to quarantine if you’ve been exposed.[ /quote]