Pfizer began administering its first COVID-19 booster shots Monday.
The pharmaceutical company is studying a third dose of the vaccine and a pneumococcal vaccine candidate.
abc7.com/pfizer-vaccine-booster-shot-covid-19-covid/10690711/
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Pfizer began administering its first COVID-19 booster shots Monday.
The pharmaceutical company is studying a third dose of the vaccine and a pneumococcal vaccine candidate.
abc7.com/pfizer-vaccine-booster-shot-covid-19-covid/10690711/