Pfizer is testing a third Covid vaccine dose in young kids, delaying trial resultsPfizer and BioNTech are testing a third dose of a Covid vaccine for young children. The third dose is a lower amount than the adult doses.Pfizer is testing a third Covid vaccine dose in young kids, delaying trial results
Researchers Are Hatching a Low-Cost Coronavirus VaccineA new formulation entering clinical trials in Brazil, Mexico, Thailand and Vietnam could change how the world fights the pandemic.Researchers Are Hatching a Low-Cost Coronavirus Vaccine