My over seas duties were accompanied by shots before deployment. Military requirements. I was vaccinated for polio, small pox, and tetnus as a child. There may be problems with vaccines, I cant testify to that. The shots have worked for me so far. Just saying.
Funny you wrote that. I can remember going through the line getting needles in both arms simultaneously in the military. Today, I stay up on my tetanus shot because I’m always around dirty/rusty steel, metal, nails and lots of other hazards. The flu shot though I don’t get. I don’t get out in public too much. I have more than a few things to do around here, my other house and acreage.