Pfizer study tests extra COVID vaccine dose for kids under 5
By LAURAN NEERGAARD AP Medical Writer Pfizer is testing an extra dose of its COVID-19 vaccine for babies and preschoolers enrolled in a study of the shots. Pfizer had been testing…
By LAURAN NEERGAARD AP Medical Writer Pfizer is testing an extra dose of its COVID-19 vaccine for babies and preschoolers enrolled in a study of the shots. Pfizer had been testing…