हिंदी खबर

California [US], February 14 (ANI): The majority of the vaccines available for COVID-19 have two doses. People are said to become more capable of resisting the virus after the second dose. But, a recent Kaiser Permanente study, found that one month after a third dose, the effectiveness of the Pfizer-BioNTech COVID-19 vaccine was higher for preventing infection and hospitalization than 2 doses of the vaccine after 1 month.

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