Two half-baked comments off the top of my head: -HIV targets, infects and cripples the immune system. While CoV2 infects and replicated aggressively, causing in

Two half-baked comments off the top of my head: -HIV targets, infects and cripples the immune system. While CoV2 infects and replicated aggressively, causing inflammation and fibrosis, HIV goes in, gets a foothold, hides and lingers like an insurgent, slowly exhausting the immune system. Very different approaches and how they are impacted by vaccines may be very different. -Convincing people to take the vaccine would be hard. Look how hard it is with a respiratory pandemic. It's "easy" to be non-high risk for HIV and people probably believe they can't get it, but people seem to continue getting it.