I grew up in the U.K., but I moved (aged 34) to German three years ago.
I fully understand that this may be solely my personal experience, but biting insects seem to affect me more strongly here than in the U.K. The bites seem to last longer, and they itch more.
Do insects in one locality differ from the same insects (or their close cousins) in another locality in their effect on people? That is to say would a mosquito bite from the U.K. and Germany affect me differently?
("Locality" is admittedly qualitative and vague.)