So the vax gives kids 8 weeks of higher immunity; 4 weeks of waning immunity; and at 12 weeks it turns negative.
I bet their answer will be, boost every 12 weeks.
NIH-Funded Study Doesn't Offer Great News for Vaccinated Children
A new study conducted by public health researchers at the University of North Carolina and the North Carolina Department of Health and Human Services uncovered new information on the efficacy of Pfizer's COVID-19 vaccine in young people age 5 to 11.
The research, funded in part by a grant from the National Institutes of Health, found that against the omicron variant of COVID-19, children in the study group ended up seeing negative — yes, negative — effectiveness some 20 weeks after being vaccinated after peaking between 60 and 70 percent effectiveness.
The large cohort study tracked a 6-month window of time during which omicron was the dominant strain to see what protection was given by the Pfizer vaccine and by previous COVID infection — also known as acquired immunity — against COVID infection or COVID-related hospitalization and/or death.
As notes accompanying the study's publication in the New England Journal of Medicine explain, researchers looked at 887,193 children in the 5 to 11 age group among which 273,157 received at least one dose of Pfizer's COVID vaccine and 193,346 became infected with COVID. Of the positive cases, 309 were known to be hospitalized and 7 were known to have died, according to the study's authors.
Among the conclusions researchers drew from their study, the Pfizer vaccine was less effective against omicron than it was the earlier delta variant while a combination of acquired immunity from previous COVID infection combined with vaccine-induced immunity offered the best protection: