Get some techies who have already had it and show antibodies to it, ie. safe to be around them. Have them rig a two way video studio in Lincoln bedroom or some other safe location in the quarters and have him do virtual rallies with BIG TV SCREENS. Heck, do live holographic Trumps if they can pull it off. Perhaps instead of his 2-3 rallies/day normal routine they could do 2+ virtual rallies at different locations at the same time with multiple crews of on site surrogates. Say he feels fine, but as a precaution his doctors are limiting him to that. Think he could get 50k+ daily to cheer on their virtual leader? While Joe struggles to get 50.
Also, be sure to get the number of rounds of PCR amplification right. We don't want him locked up by two months of false positive tests after he's beat it.