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Pfizer and Moderna COVID vaccines must have three doses

Two messenger RNAs COVID-19 vaccine highly effective. At least very early on.

But due to the spread of new and more virulent variants of the SARS-CoV-2 . pathogen, the natural tendency of some vaccines to decline over time and the way in which countries rush to use vaccine doses, the mRNA injections from Pfizer and Moderna have become remarkable. less than recent effectiveness.

Now, experts agree that two initial doses of mRNA are not enough. Booster shots aren’t just a good idea for a small number of people with weakened immune systems or jobs that expose them to unvaccinated people. Accelerator must be standard for everybody.

https://www.thedailybeast.com/pfizer-and-moderna-covid-vaccines-must-have-three-doses?source=articles&via=rss Pfizer and Moderna COVID vaccines must have three doses

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