The main difference - so far - is that we had a drought in 1976. We may not have had much rain yet - at least not in Cheshire - but there is every chance that it will change soon. My sons were 5 and 3 that summer and both got mumps, but not severely and they didn't pass it on to me. DS1 got a bee sting in his foot, and his little brother came to me and said," I won't get mumps, Mummy, cos I didn't get stung by a bee."
I noticed, to my chagrin, that a house along the road had a new swimming pool and that it was being filled by hose from the domestic water supply. I wrote to the water company but was told that there was nothing they could do about it. On a weekend away in Shropshire, my (now ex) husband and I were aghast at the extent of fire damage to farm lands and the omni-presence of fire tenders wherever we went.