[VanShuyten]

I think the author is confusing introduced species with native ones, and is conflating adaptation of these introduced species to new environments with “global warming”.

He also is ignoring illegal aliens and other visitors as sources for these diseases.

The yunggins don’t think quite right nowadays.

[Harmless Teddy Bear]

The point I was making is that they are not in a new environment but one where they have been for a very long time.

What does that has to do with evolution, devolution or little green men?