In a level 2 notice - one grade below a call to avoid non-essential travel - the Public Health Agency of Canada said travelers may be subject to procedures to limit the spread of monkeypox, such as isolation, should they become infected.

"You may have limited access to timely and appropriate health care should you become ill, and may experience delays in returning home," the agency said on Twitter.

Around 30 countries where monkeypox is not endemic have reported outbreaks of the viral disease, with more than 911 confirmed or suspected cases mostly in Europe.