There is one in the Pfizer application for FDA authorization in 5-11 age group, see Table 14, page 34. It is not a direct study, it's an extrapolation based on

There is one in the Pfizer application for FDA authorization in 5-11 age group, see Table 14, page 34. It is not a direct study, it's an extrapolation based on antigen titers in a 2000 kid 2 months clinical trial, but it's the only one I am aware of. https://www.fda.gov/media/153447/download https://www.fda.gov/media/153447/download