This is an important point to make: 1) There have only been about 5 confirmed reinfections out of 30+ million, 2) Vaccines *don't prevent reinfection* and never have. What they prevent is the development of symptoms; the disease is not the infection, so to speak. What -- https://twitter.com/jeffbachtel/status/1327839909814677504

-- happens is you get the disease (or the vaccine), develop T-Cells (and limited-time antibodies), and somewhere down the road you're exposed to it again and *you get reinfected*. But because you have those defenses, you don't get sick. This is how they *all* work. Which is --

-- why it's essential to still mask up even if you're immune or vaccinated, because if you get reinfected you can still carry the infection to those who haven't yet been exposed even if you don't get sick.