Vaccine mandates trickled into the U.S. travel sphere last winter, picked up steam in the spring and hit fever pitch over the summer.

Vaccine shots are now necessary to eat in cafes in France, to see a Broadway show in New York City and soon, to fly commercially in Canada.

Though mandates were expected for cruises and international travel, the pace and scope of activities that they now cover — from booking group tours to staying in hotels — has surprised industry experts.

“It has been interesting to watch the striking acceleration of vaccine mandates,” said Harry Nelson, founder of health-care law firm Nelson Hardiman.

He said that while the U.S. Food and Drug Administration’s full approval of the Pfizer-BioNTech vaccine last month has prompted some mandates, they’re also being “driven by increasingly supportive public opinion of the vaccinated majority.”

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