Pfizer Begins Testing COVID-19 Booster Shot With Pneumococcal Vaccine

Pfizer Begins Testing COVID-19 Booster Shot With Pneumococcal Vaccine.The drugmaker began administering its first coronavirus booster shots on May 24.Pfizer is conducting a trial to see if it is safe to administer a third dose of the vaccine... .... in tandem with a pneumococcal vaccine candidate. .Pneumococcal vaccines help to prevent pneumonia.600 adults over the age of 65 will participate in the study.They will follow up with Pfizer six months later