Yes, ticks that carry diseases endangering dogs and humans are sadly now found in Alaska. The two species that seem to be best established are the American Dog tick and the brown dog tick.
Ticks in Alaska were formerly limited to species that principally fed on small rodents and were not dangerous to dogs or humans.
So far, tick infestations of these dangerous species new to Alaska have been found in Anchorage, Denali National Park, Fairbanks, Juneau, North Pole, Sitka, Valdez, and Willow. Veterinarians are recommending that people in these areas check their dogs for ticks and consider tick prevention treatments.