As a terrible hypochondriac, it's bothered me for years that when we went back the week after the pre-test the nurse looked at my arm and said 'Oh, you're immune already, you don't need the BCG' and sent me away. No chest X-ray, no follow up at all.
I have no idea why I had immunity and nobody else did, but I have often wondered if it was because the milk we had delivered to the hosue for many years was green top, i.e. unpasteurised. I believe one of the strongest reasons for pasteurising milk is to prevent the transmission of TB.
I would have assumed there wasn't too much TB in the general population in the 1960s and early 70s when I was growing up, as antibiotics and the BCG had pretty much knocked it on the head by then.
When I was younger and especially when my children were little I picked up bad colds a lot more often than I do now in my late 50s. A few times I ended up with a hacking cough and the thought frequently crossed my mind that at long last the secondary TB was kicking in (I said I'm a hypochondriac
). Not yet, though - phew.
Anybody else got a smallpox vaccination mark? That's a real sign of age. Mine is about the size of a 50p piece.