Heyup Anne!
Not just urban foxes infecting each other either.
Brother-in-law, who farms just South of Berwick-on-Tweed, never had any problems with mange infecting his sheep dogs until a period a few years ago when they developed a particularly hard to shift infection.

He later found out that a group of people in Newcastle were catching some of the cities foxes and releasing them in the countryside near him!!!


BTW, I was on one of those marches!