The CDC reports the inflated rate of hospitalization for any patient who tests positive for the virus. For example, an asymptomatic child who tests positive after being injured in a bicycle accident could counted as a COVID case. The CDC doesn’t distinguish whether a child is hospitalized for Covid or with Covid.
Rappoport pointed out that more unvaccinated people are are being diagnosed with COVID because they are more likely to get a test than vaccinated people. Also, the test protocol has been altered for vaccinated people to make the tests less sensitive, and therefore, producing fewer false positive results.
Biden explicitly blamed the unvaccinated for the surge in case numbers despite many who have received the jab have also been diagnosed with COVID. The CDC also recommended indoor masks for all teachers, staff, students and visitors at schools nationwide, regardless of vaccination status. A recommendation is not a law.