Early clinical trial data shows that the Pfizer-BioNTech vaccine intended to be used in children aged six months to five years old is not effective against the variant.Thereports that the smaller, two-dose, regimen was showing effectiveness against the Delta variant when trials first began, but began to falter when Omicron arrived. Children in the control group of the trial also were very unlikely to catch Covid at all, making it harder for researchers to determine the effectiveness of the shots.
Load More
Load More