Quote:
Originally Posted by tuccillo
I believe it is more accurate to say that everyone who has had both shots will experience a small probability that the vaccine will not protect them against asymptomatic infection or infection with mild symptoms. The vaccine appears to be drive the probability of severe disease or death to near zero for everyone who has had both shots. Of course, with J&J it is one shot.
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The Moderna and Pfizer vaccines have a higher efficacy (80%) after their first shot than the "one and done" J&J vaccine. You can consider the mRNA vaccines as "one and done" if you only get one shot and still have a better efficacy than J&J.