Pfizer and Moderna, the only coronavirus vaccines with emergency use authorization right now, are both about 95% effective after two doses, which take place three to four weeks apart.
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"After you have the first dose, it's not party like a rock star," said UCSF epidemiologist, Dr. George Rutherford, who says for most immunity kicks in 7 to 10 days after the second injection.
So ten days after your second injection, what activities are safe?
"I think you can have people over for dinner who have also been vaccinated. I think you can visit your grandchildren. Children are very unlikely to be transmitters as far as we know," Dr. Rutherford said.
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"I think those are the sorts of things you can do. I would be hesitant to walk into a big crowd where you know large portions of people haven't been vaccinated yet, without a mask on," he said.
With so much virus circulating right now, Dr. Rutherford says mask wearing is still critical even if you're vaccinated.
"I'd wait until we really get a lot of people vaccinated before I stop wearing a mask when I go out," said Rutherford.
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