In Newfoundland we are fortunate to be insulated from the spread of some insects commonly found on the mainland. We don't hear much about Deer Ticks or Lyme Disease here. There is actually a small population of Deer Ticks (aka Black-Legged Ticks) in the province. In fact, I just read a note out of Clarenville that a dog there tested positive for Lyme Disease and Deer Ticks have been found in the area.
Though deer is the desirable host for Deer Ticks, our moose and caribou populations may offer an adequate host to enable to population to grow. You can provide protection for your pets. A community vet will have the appropriate collars. People do get Lyme Disease - it comes following a bite (i.e. sucking blood) by a infected tick. Not all ticks will have been infected by the bacterium Borrelia burgdorferi. If you are bitten and it was by a tick - expect a rash which expands outwards over several days, aches, chills, fever and other symptoms. Have this checked out by your doctor and get treated.
If you plan to hike in summer and will be travelling through long grass or brush, wearing pants would be a preventative measure. If you think you've found a tick bring it to a local or provincial government vet.