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The Associated Press says wearing a mask and keeping a distance are still recommended for some time after people are vaccinated.
, Pfizer's vaccines are now in use in the U.S. and Canada, and the FDA said in a report that the first dose of the vaccine could effectively reduce the risk of severe new coronary pneumonia symptoms.
Pixabay understands that the first vaccine needs to be injected twice.
after the first dose, the vaccine is about 50% effective, and after three to four weeks, the effectiveness is 95%.
, it is usually not timely, but is protected to a certain extent within a few weeks of the first dose.
, however, is not fully protected until the second dose is given.
experts at the University of Washington say it's unclear whether the new vaccine will protect people from infection.
means that vaccinated people may still be able to be infected and continue to spread the virus, although it may spread much less quickly.
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