Studies confirm waning immunity from Pfizer's Covid-19 vaccine
Two real-world studies published Wednesday confirm that the immune protection offered by two doses of Pfizer's Covid-19 vaccine drops off after two months or so, although protection against severe disease, hospitalization and death remains strong.
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Two real-world studies published Wednesday confirm that the immune protection offered by two doses of Pfizer's Covid-19 vaccine drops off after two months or so, although protection against severe disease, hospitalization and death remains strong.
