Also, no self-respecting virus would want to infect a Democrat!

Good point . . . but on the other hand, leftists 'fear' for the sake of fear itself. It's sort of their ideological 'thing'.

They are merely following FDR - 'Nothing to fear but fear itself.'

With regard to your title, you're absolutely right.
No self respecting virus would infect a democrat because they're vaccinated. Go for the easier prey, the party who held the championship at the Darwin Awards in 2020 and now coming back with a vengeance in 2021, trying to beat their record from last year.