Last jab I had was Tetanus. And I think the nurse fucked up, 'cause I get a dead arm feeling at the exact point of the injection fairly regularly.
I'm in favour of immunisation, I'm certainly not in favour of them also injecting you with egg white, formaldehyde, and mercury. The egg is from what they grow the virus in...you have a baby, and they tell you they can't touch eggs until 12 months old, because they might develop an allergy. They inject them with a HepB vaccine when they are an hour old. Formaledehyde and mercury have no "safe" doseage, but are used as preservatives in the vaccine.
Once upon a time they used to (well actually, they still do) grow viruses on monkey kidneys to manufacture vaccines. There was a virus named Simian Immunodeficiency Virus that was potentially the root cause of HIV.
Have you ever asked your vet WHY your dog needs to be immunised for Parvovirus, when Parvo is a harmless cat virus ?