You're in BC and I'm in New York State, so we're about as far apart as possible.........
I mean that literally and not politically....
I've seen some deer with injury damage that looked like that, but after further thought it could be lice. Glad you concur. I was guessing quite a bit.
If I recall correctly, they can likely overcome the lice problems once the weather gets better and they get stronger with better feed, etc.?
PS - - I did some quick Google research, and the deer lice that cause that condition are not known to transfer to human hosts.
PPS - - found this from Oregon. Black-tailed deer and White-tailed deer. Again, lice-related.
fastfacts_FF_010104_deerhairloss.pmd