FDA drops vaccine efficacy threshold for children’s COVID-19 vaccine assessment

FDA’s Peter Marks told a congressional committee that the COVID-19 Vaccines for children under 6 years, to be approved for Emergency use, they won’t have to meet the 50% efficacy threshold originally set. [1, 2, 3]

Pfizer’s two-doses “pediatric vaccine failed to trigger an immune response in 2-, 3- and 4-year-olds comparable to the response generated in teens and adults” [4]