@Infoseepage I am not sure on the reasons behind the apparent low number of severe cases (partly because the lack of transparency of US authorities, especially al local level). I think that genetic constellation of current viruses is not yet fully permissive of an effective systemic infection, that eventually drives to severe and fatal outcomes. N1 might play a role but current knowledge is limited. Past pandemics hinted at NA role in attenuation of infection, but no certainties.