'Remain vigilant': Ontario's top doctor says province could see rise of COVID-19 subvariant 'Kraken'
Ontario’s top doctor is urging residents to “remain vigilant” as some regions see a rise of the “Kraken” subvariant of COVID-19.
In a statement issued Thursday morning, Dr. Kieran Moore said the highly transmissible XBB.1.5 variant is “not associated with a change in severity of illness.”
“But due to its increased transmissibility, more individuals may get infected as it becomes the main variant in Ontario,” he said.
This is the first time the chief medical officer of health has addressed the new subvariant, which the World Health Organization says is a sub lineage of Omicron.
- Download our app to get local alerts on your device
- Get the latest local updates right to your inbox
“We must remain vigilant as many jurisdictions across the province continue to see a rise in the number of cases of the more transmissible XBB.1.5 variant of COVID-19,” Moore said in the statement.
“I continue to strongly recommend that everyone stays up to date with their vaccinations as it remains our best defence against COVID-19 and its variants, especially for those at increased risk of severe infection and for anyone who has not received a booster or been infected in the past six months.”
Dr. Fahad Razak, an internist at St. Michaels Hospital and former head of the province’s science table, has said its likely XXB.1.5 will become the dominant strain of COVID-19 in Ontario.
"If we follow the U.S. trajectory, that means that this will become the dominant version of the virus circulating probably within just a few weeks in Ontario and across the country," he said last week.
“There is a need, I think, now to recognize that we're probably going to see a surge of infections in the coming weeks and talk about what we can do to reduce infection as much as possible."
The last COVID-19 genomic surveillance report from Public Health Ontario noted the XBB.1.5 subvariant was expected to account for 22.2 per cent of COVID-19 cases by Jan. 25.
At the same time, Moore indicated overall respiratory virus trends—which includes influenza and Respiratory Syncytial Virus—are continuing to decline after a peak in November.
“The impact on our communities, hospitals and intensive care units is improving,” he said.
More advised Ontarians to stay home when they feel sick, to wash their hands often, and to wear masks in crowded indoor public spaces.
“We have the tools we need to reduce the spread of respiratory illness in our communities, and I am grateful to Ontarians for continuing to utilize them,” Moore added. “These important choices help preserve our hospital capacity to ensure care is always available for those who need it.”
At the same time, when asked if he strongly recommended vaccines and less strongly recommended masking, Moore said that was a “fair assumption.”
Individuals with underlying conditions in particular, however, should continue to mask while inside indoor public spaces such as malls or on transit, Moore said.
CTVNews.ca Top Stories
WATCH LIVE | U.S. President Joe Biden to meet Trudeau, address Parliament today
U.S. President Joe Biden has made it to Canada, as part of his first official visit since taking office. Alongside Prime Minister Justin Trudeau, Biden will be meeting with top officials and addressing Parliament in an effort to reaffirm the strength of the Canada-U.S. relationship.

LIVE UPDATES | Watch live coverage of U.S. President Joe Biden's trip to Canada
As Joe Biden makes his first trip to Canada as president of the United States, CTVNews.ca is offering live coverage of the leader's visit. Follow our live blog on CTVNews.ca and the CTV News app for the latest updates.
Incredible photos show northern lights dancing across much of Canada
Sky-gazers and shutterbugs across much of Canada were treated to a spectacular display of northern lights Thursday night and into Friday morning.
W5 Investigates | 'Canadians should be very concerned about their drinking water': W5 investigates asbestos cement pipes
W5 investigates aging asbestos pipes across Canada and the potential health hazards if it ends up in your tap water. Watch W5's 'Something in the Water' Saturday at 7 p.m. on CTV.
Ontario crypto king kidnapped, tortured in an attempt to get millions in ransom, documents say
Ontario’s self-described crypto king was allegedly abducted, tortured, and beaten for days as his kidnappers looked to solicit millions in ransom, his father told a court in December.
Restaurants and bars brace for biggest alcohol tax jump in 40 years
Canada's restaurant industry is bracing for the biggest jump in the country's alcohol excise duty in more than 40 years, spurring warnings the tax hike could force some bars and restaurants out of business.
Unwelcome spotlight falls on NHL team Pride night events
Pride nights, held annually for several years by National Hockey League teams to show support for the LGBTQ2S+ community, are in the spotlight following several high-profile incidents this season.
Why executions by firing squad may be coming back in the U.S.
The idea of using firing squads is making a comeback in the U.S. Idaho lawmakers passed a bill this week seeking to add the state to the list of those authorizing firing squads, currently Mississippi, Utah, Oklahoma and South Carolina.
Hershey looking to remove lead, cadmium from chocolate
Hershey Co. is looking to reduce 'trace' amounts of lead and cadmium in its chocolate, chief financial officer Steve Voskiul told Reuters on Wednesday, after Consumer Reports found that some dark chocolate bars had potentially harmful levels of the heavy metals.