Sibylla Bostoniensis: Given how weirdly comprehensive of the population the CDC's list is, you might reasonably be asking, "Geeze, is there anybody not covered?" Yes, but apparently not many: Your Local Epidemiologist reports that there's an estimate that 75% of the adult US population is covered by the "at least one underlying condition" exception. [...] You're probably covered by it. Every adult you know under 65 and a whole lot of adolescents is probably covered by it.
https://jwz.org/b/ykvG
