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url = https://www.npr.org/tags/804916759/covid-19
covid-19 : npr
Japan is ramping up COVID-19 restrictions as omicron cases surge
While many Japanese adults are fully vaccinated, few have gotten a booster shot, which has been a vital protection from the highly contagious omicron variant.
January 19, 2022 • Researchers in the U.K. have the first estimates for how long a third shot of the Pfizer vaccine will last. The findings are mixed.