For the younger kids, it dropped from 65% in the first two weeks to negative efficacy: -41% a month later. In other words, the vaccinated young kids were actually more likely to be infected than unvaccinated kids a month and a half after vaccination.
Jay Bhattacharya, a professor at Stanford University Medical School, explains:
“What about the efficacy of the vaccine for children in preventing infection or hospitalisation? The results were dispiriting. For older kids, vaccine efficacy against being infected dropped from 76% in the first two weeks after full inoculation to 46% a month later. For the younger kids, it dropped from 65% in the first two weeks to negative efficacy: -41% a month later. In other words, the vaccinated young kids were actually more likely to be infected than unvaccinated kids a month and a half after vaccination. Against hospitalisation, the vaccines held up better over time, but since the number of hospitalisations in this age group was so small even without the vaccine, the vaccine prevented few cases.”
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