Exactly how long does a COVID-19 vaccine last?
And the data available is promising.
Thats really encouraging news, says Dr. Moderna also hasdataalbeit from a much smaller samplethat suggests lasting efficacy of its vaccine.

That is preliminary evidence for both Pfizer and Moderna efficacy lasting six months and probably longer, he says.
Instead, what youll experience is a slow decline over time.
And there is some evidence suggesting six months is likely, as Dr.

professor of medicine and epidemiology at UCLA
Brewer has noted, to be a conservative estimate of efficacy.
Its Amazing How Its All Connected.
Protection is a function of two parts.

So if theres no replication and transmission, theres no formation of new variants.
So when you hear that our current vaccines are less effective against these variants, Dr. …
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