In Australia it is recommended to have the pneumonia vaccination when you turn 65 it is free and was at the time considered to be a one only. However, I have just received a letter from my doctor saying the Government protocol has changed and they now say people over 70 should have a booster. I'm off to have mine on Tuesday. Both are free as is the shingles vaccination if you are in your 70's.
What "back then" inconvenience would annoy today's youngsters?

