Like the Dems, Republicans events have shifted to mostly virtual to encourage social distancing. This has reduced in-person contact from 100,000s to a fraction of that. Like the Dems, Republicans have had some limited in-person events where attendees were reminded of CDC guidelines. The contrast is created by Biden having almost a bizarre attraction to his mask. Even when there is almost no one in the room, great distance is maintained and he's standing far away, he still wears a mask. This doesn't match the CDC guidelines or the general public.