Pfizer begins testing use of pneumococcal vaccine along with Covid-19 booster shot

Pfizer begins testing use of pneumococcal vaccine along with Covid-19 booster shot

source https://www.indiatoday.in/coronavirus-outbreak/story/pfizer-pneumococcal-vaccine-along-with-covid-19-booster-shot-1806572-2021-05-25?utm_source=rss

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