The Centers for Disease Control and Prevention (CDC) on Tuesday warned against travel to Canada after updating its COVID-19 travel guidelines on Sunday.
Canada is now rated at level four, the highest rating the CDC holds, called "COVID-19 Very High." Travelers are told to avoid countries on the level four rating and be fully vaccinated if they do have to travel there.
The warning comes two months after the U.S. lifted travel restrictions to and from Canada for fully vaccinated individuals.
"We are aware of the latest CDC advice," a spokeswoman for Canadian Foreign Minister Melanie Joly said, Reuters reported.
The CDC has placed around 80 countries on the level four rating as COVID-19 cases have surged across the world due to the omicron variant.
The surge from omicron has caused Canada to recently record its highest one-day COVID-19 hospitalizations throughout the pandemic, according to Reuters.
The level four rating has been placed on a number of popular tourist destinations for U.S. travelers, including Aruba, Germany, the United Kingdom and France.
Only a little more than 30 countries are labeled at the CDC's lowest COVID-19 level, including Taiwan, India and Japan.