A paddleboarder and dog on Meech Lake, in Chelsea, Quebec, on Oct. 11. (Justin Tang/Canadian Press/AP)

TORONTO — As the holiday season approaches amid a surge in novel coronavirus cases across the United States, a Thanksgiving-related spike in Canada could serve as a cautionary tale.

Case counts in much of Canada are climbing, even in parts of the country that imposed new autumn restrictions. Canadians celebrate Thanksgiving on the second Monday of October, and both provincial and federal officials have pointed to the holiday as a culprit in the spike.