Protection against infection offered by fourth Covid-19 vaccine dose wanes quickly, Israeli study finds - CNN
4/5/2022 12:00:00 AM3 yearsago
by Jen Christensen
by Jen Christensen
A fourth dose of the Pfizer/BioNTech Covid-19 vaccine seems to offer short-lived protection against infection overall, but protection against severe illness did not wane for at least several weeks, according to a new study.
A fourth dose of the Pfizer/BioNTech Covid-19 vaccine seems to offer short-lived protection against infection overall, but protection against severe illness did not wane for at least several weeks, a… [+3367 chars]
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