In Canada, people, who lives long are mostly from Saskatchewan. They live more than 100 years. We can assume this area has the healthiest environment in the country. As far as I understand this area doesn’t have industries like other big cities. Here mostly we have prairie fields with crops.
No wonder, in the healthy area’s bugs will be also be very healthy. When I first came here, I surprised by watching the size of mosquitoes. They are big, and if you have one bite, you will feel it for days.
So, in summer, no matter where you go out, in a park, beside the river or just to visit your neighbor, I will suggest you, put some bug spray before you leave. Especially to kids.