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Month: June 2022

Pfizer and BioNTech say updated Covid-19 boosters show increased immune response against Omicron variant

By Carolyn Sung, CNN Two Pfizer and BioNTech Covid-19 vaccine boosters updated to target the Omicron variant show a substantially higher immune response than the current Covid-19 vaccine, the companies said Saturday. The companies tested a vaccine that targets Omicron BA.1 subvariant and bivalent booster — which targets two strains — that includes the current

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