Buzz Aldrin says "we didn't go there" to a kid asking about moon travel

[uh-oh]

can someone explain the whole anti anti vax movement lol. legit tho. if you vaccinate your kids, aren't they in the clear? like lets say i have a kid (shudders) and don't get him vaccinated. he gets measles. your kid was vaxed tho. is your kid endangered now?

or is it more about just eradicating these diseases entirely, starving them of hosts altogether? which makes sense but don't they just pop back up and shit

i dunno how any of that works. someone put me on