Two weeks after the World Health Organization designated Omicron a variant of concern, it has dominated headlines, sparking renewed fears about the spread of COVID-19 and forcing countries to strengthen their vaccination campaigns with booster shots.
Over the last several weeks, health officials across the globe have been paying close attention to Omicron cases to answer important questions like how transmissible it is, how good it is at evading immunity from vaccines or past illness, and whether it causes more severe illness.
Their work has painted a more complete picture of how the variant spreads and how concerned we need to be.
On Friday, scientists in South Africa, where the variant was first detected, said they have seen no sign that Omicron is causing more severe illness, despite increased rates of hospitalizations.
Hospital data shows that COVID-19 admissions are rising sharply in more than half of the country's nine provinces, but deaths are not rising as dramatically and indicators such as the median length of hospital stay are reassuring.
"Preliminary data does suggest that while there is increasing rate of hospitalization ... it looks like it is purely because of the numbers rather than as a result of any severity of the variant itself, this Omicron," the country鈥檚 health minister, Joe Phaahla, said Friday.
ICU occupancy in South African patients with confirmed Omicron cases sits at just 6.3 per cent, much lower than previous Delta wave, with fewer patients requiring supplemental oxygen to help them breathe.
To date, all reported cases of Omicron in Canada have been asymptomatic or mild.
Experts say it is possible that Omicron has mutated to become less severe 鈥 but it鈥檚 too early to make that assumption, especially without concrete data to show how many people that are sick with Omicron are vaccinated or have had previous COVID-19 infections.
鈥淗ere's the thing for everybody to keep in mind. Most of the cases that we're hearing about happening are in people that have had COVID before who have had vaccines,鈥 Sarah Otto, virologist at the University of British Columbia, told CTV National News.
鈥淲hat is really unknown at the moment is how severe cases will be among people that have never had any exposure whatsoever. And I think here in Canada, we have still have a large proportion of the population that is not vaccinated, not just children, but then another 10 to 15 per cent of adults that are also not vaccinated and at risk of severe cases.鈥
New cases are rising steadily in South Africa, the epicentre of this variant鈥檚 outbreak.
In the past few days, a nationwide outbreak linked to Omicron has been infecting around 20,000 people a day, with 19,018 new COVID-19 cases on Thursday, according to data from the country鈥檚 National Institute of Communicable Disease.
However, infections have yet to reach the peak of more than 26,000 daily cases during a third wave fuelled by the Delta variant.
In the U.K. 鈥 where officials expect Omicron to become the dominant strain in the next two to four weeks 鈥 preliminary studies of household contacts found a higher risk of transmission from Omicron when compared to Delta.
While the Delta variant remains the dominant strain in Canada and around the world, the spread of Omicron is increasing globally. And in Canada, there are early signs of community spread.
While most of the confirmed Omicron cases in Canada have been traced back to international travel and close contacts, cases with no known links to travel are starting to be reported, Chief Public Health Officer Dr. Theresa Tam noted during a press conference on Friday.
Some Canadian provinces are already seeing a jump in daily case counts, which could be aggravated further by the spread of Omicron, Tam said.
The current rise in new cases is primarily driven by Ontario and Quebec, with both provinces experiencing numbers not seen since spring. Should transmission rates increase by 15 per cent, or if Omicron takes hold under current levels of transmission, then Canada could see cases skyrocket to record levels above 10,000 cases before January, modelling charts show.
鈥淲e must approach the coming weeks with an abundance of caution and at the same time, we must be prepared to act quickly to control the spread at the first sign of rapidly accelerating cases,鈥 said Deputy Chief Public Health Officer Dr. Howard Njoo.
A stand out factor about the Omicron variant is the sheer number of mutations to the virus鈥檚 spike protein, which allows it to bind to human cells and gain entry to the body.
But a new study suggests that Omicron likely acquired at least one of its mutations by picking up a snippet of genetic material from another virus 鈥 possibly one that causes the common cold.
This specific genetic sequence does not appear in any earlier versions of SARS-CoV-2, the virus that causes COVID-19, but is common in many other viruses including those that cause the common cold, and also in the human genome, according to researchers.
Lead study author Venky Soundararajan of Cambridge, Mass.-based data analytics firm nference, suggests this may mean Omicron is attempting to make itself look 鈥渕ore human鈥 to trick the immune system.
In an update this week, WHO said existing vaccines should still protect people who contract the Omicron variant from severe illness, but noted that preliminary lab tests from South Africa suggest the variant can partially evade the Pfizer jab.
On Wednesday, Pfizer released preliminary data suggesting that two doses may not be protective enough to prevent an Omicron infection, but a booster increased by 25-fold people's levels of virus-fighting antibodies against the Omicron variant.
However, those findings are preliminary and haven't yet undergone scientific review.
Several countries have already announced booster shot initiatives in light of the Omicron variant.
Ontario announced Friday that anyone over the age of 18 will be eligible to book a booster shot in January. Several other provinces, including Alberta and B.C., have expanded their booster shot program. However, Canadian officials have said the efficiency of booster shots remains to be seen.
鈥淭he extent of the protection against Omicron from the primary series and booster dose remains to be seen, and we're going to learn a lot about this in the days to come,鈥 Tam said during a news conference last week.
鈥淏ut nevertheless, it is still prudent to maximize the possibility of protection from vaccine by, first of all, offering the vaccine to anyone who hasn't had the primary series, but then offering the boosters.鈥
The National Advisory Committee on Immunization strongly recommends that adults aged 50 and older receive a COVID-19 booster shot. The committee also made a discretionary recommendation on booster shots for Canadians 18 to 49 years of age, saying they 鈥渕ay鈥 be offered a third dose based on individual risks and where they live 鈥 recommendations that would have been made with or without the presence of the Omicron variant.
While there is a good chance current vaccines may not be as effective against the Omicron variant, experts say they are still likely to offer some level of protection given their role in helping the body develop antibodies and T-cells to fight off the virus.
鈥淚t's very unlikely that it's going to completely make our current vaccines obsolete,鈥 Dr. Susy Hota, medical director for infection prevention and control at the Toronto-based University Health Network, previously told CTVNews.ca.
鈥淭hey may be reduced in effectiveness, but there's still a very broad immune response that these vaccines elicit. 鈥淚f we can increase the overall protection, it just puts us in a better place with all the variants that we're dealing with.鈥
- With files from Jennifer Ferreira, The Canadian Press, The Associated Press and Reuters
A $2.14-billion federal loan for an Ottawa-based satellite operator has Canadian politicians arguing about whether American billionaire Elon Musk poses a national security risk.
Twenty-seven year 麻豆影视 reporter and anchor John Vennavally-Rao shares his story of what it was like to have an ostomy bag as part of his health-care battle. 'I鈥檓 grateful for what it did to extend my life,' he writes in a personal column for CTVNews.ca.
Unusual flippered feet are making their way into the Saint Lawrence River this weekend. Led by underwater explorer and filmmaker Nathalie Lasselin, volunteer divers are combing the riverbed near Beauharnois in Mont茅r茅gie to remove hundreds of tires that have been polluting the aquatic environment for decades.
A sea lion swam free after a rescue team disentangled it near Vancouver Island earlier this week.
U.S. Vice President Kamala Harris on Saturday accepted an invitation from CNN to debate former President Donald Trump on October 23, challenging her rival to another engagement on a public stage in the final weeks of the campaign.
Police have arrested an 18-year-old woman who allegedly stole a Porsche and then ran over its owner in an incident that was captured on video.
The end of the day 鈥 when school, extracurricular activities and homework are (hopefully) finally done 鈥 is the window that many kids have for downtime. It can be a struggle to convince them not to go on their phones.
For some young people, a popular method for getting a quick high is by misusing laughing gas 鈥 and lately, that鈥檚 in the form of nitrous oxide from products sold by the company Galaxy Gas.
Looking after an adult with severe autism can be a full-time job. Ask any parent who has a child severely affected by autism spectrum disorder 鈥 it鈥檚 a job that can get more difficult as the child becomes an adult.
A man is facing numerous drug trafficking charges after Dufferin OPP seized a large assortment of drugs and weapons in Orangeville earlier this week.
The London Police Service (LPS) is currently investigating a suspicious death in the east end.
A body has been found in the vicinity where a woman went missing on the Ottawa River near Pembroke, Ont. while kayaking Tuesday night, according to the Ontario Provincial Police (OPP).
A Calgary family on a trip to Chinook Centre experienced the lows and highs last week, when a stuffie went missing.
Unusual flippered feet are making their way into the Saint Lawrence River this weekend. Led by underwater explorer and filmmaker Nathalie Lasselin, volunteer divers are combing the riverbed near Beauharnois in Mont茅r茅gie to remove hundreds of tires that have been polluting the aquatic environment for decades.
The 75-year-old building, formerly the Waskesiu Chamber of Commerce building, was relocated to the Parks Canada compound on the edge of the townsite.
Donald Trump returned to North Carolina on Saturday, stumping in the southern battleground state with direct appeals to women, claiming he would be a better champion for them than U.S. Vice President Kamala Harris, who is vying to become the first female president.
Sheba, a 50-year-old seal at the Cornish Seal Sanctuary in southwest England, has far surpassed the average lifespan for seals and could be the oldest in captivity in the world.
The more Chelsea Walsh talked to the eccentric fellow American who seemed to pop up in every square and cobblestone street of Ukraine's capital, the more she got creeped out.
Specialist divers surveying the wreckage of the US$40 million superyacht that sank off Sicily in August, killing seven people including British tech tycoon Mike Lynch, have asked for heightened security to guard the vessel, over concerns that sensitive data locked in its safes may interest foreign governments, multiple sources told CNN.
Israel and Hezbollah exchanged fire on Saturday as rescue crews in Beirut searched the rubble of an apartment building that was leveled by an Israeli airstrike that killed at least 37 people, including one of the militant group's senior leaders as well as women and children.
A $2.14-billion federal loan for an Ottawa-based satellite operator has Canadian politicians arguing about whether American billionaire Elon Musk poses a national security risk.
Foreign Affairs Minister Melanie Joly says close to 45,000 Canadians are in Lebanon, months after warning there is no guarantee Ottawa can evacuate them if the situation deteriorates further.
The federal firearm buyback program has cost taxpayers nearly $67.2 million since it was announced in 2020, but it still hasn't collected a single gun.
A new study is adding to emerging research showing that exposure to metals such as cadmium, uranium and copper may also be associated with the leading cause of death worldwide, cardiovascular disease.
For some young people, a popular method for getting a quick high is by misusing laughing gas 鈥 and lately, that鈥檚 in the form of nitrous oxide from products sold by the company Galaxy Gas.
Looking after an adult with severe autism can be a full-time job. Ask any parent who has a child severely affected by autism spectrum disorder 鈥 it鈥檚 a job that can get more difficult as the child becomes an adult.
If something looks too good to be true, it might be. That's the message from Saskatchewan horticulturists after customers have come into their stores hoping to buy purple apple trees this month.
The owner of the shuttered Three Mile Island nuclear power plant said Friday that it plans to restart the reactor under a 20-year agreement that calls for tech giant Microsoft to buy the power to supply its data centers with carbon-free energy.
Lebanese authorities on Thursday banned walkie-talkies and pagers from being taken on flights from Beirut airport, the National News Agency reported, after thousands of such devices exploded during a deadly attack on Hezbollah this week.
Kathryn Crosby, who appeared in such movies as 'The 7th Voyage of Sinbad', 'Anatomy of a Murder,' and 'Operation Mad Ball' before marrying famed singer and Oscar-winning actor Bing Crosby, has died. She was 90.fff
'Saturday Night Live' will have a slew of famous faces to help kick off its historic 50th season when the show returns later this month.
The death of the Tragically Hip鈥檚 lead singer Gord Downie united fans across Canada in their grief, but in many ways pulled his bandmates apart.
It is not a great time to be a coffee drinker. In general, coffee bean prices are the highest they've been in more than a decade.
The maker of the popular party game Cards Against Humanity is accusing Elon Musk's SpaceX of trespassing on and damaging a plot of vacant land the company owns in Texas.
The Canadian Food Inspection Agency says a recall of Nutrabolics brand Feed Me Vegan Real Food Protein & Oats bars due to undeclared milk has been expanded.
Tattoos are becoming more common in today's society and, as a result, appear to be more acceptable in the workplace than they used to be.
The end of the day 鈥 when school, extracurricular activities and homework are (hopefully) finally done 鈥 is the window that many kids have for downtime. It can be a struggle to convince them not to go on their phones.
While slang may come and go, experts say the phenomenon behind them, which constantly churns out brand-new bon mots, is as old as language itself.
Kiefer Sherwood spent several nights last spring chasing Quinn Hughes around the ice and generally pestering the Vancouver Canucks.
Cole Haas is more than just an avid fan of the F.W. Johnson Wildcats football team. He's a fixture on the sidelines, a source of encouragement, and a beloved member of the team.
Andre De Grasse, fresh off of winning Olympic gold in the 4x100-metre rally in Paris 2024, has been in Toronto for the latest few weeks as part of the Toronto International Film Festival.
General Motors (GM) has issued a recall for 38,000 vehicles for safety risks related to a software glitch, Transport Canada reported in a notice on Wednesday.
Chechen leader Ramzan Kadyrov has accused Tesla CEO Elon Musk of 'remotely disabling' his Cybertruck, which had been sent to the frontline of Russia's war in Ukraine.
An Ontario man says it is 'unfair' to pay a $1,500 insurance surcharge because his four-year-old SUV is at a higher risk of being stolen.
Cole Haas is more than just an avid fan of the F.W. Johnson Wildcats football team. He's a fixture on the sidelines, a source of encouragement, and a beloved member of the team.
Getting a photograph of a rainbow? Common. Getting a photo of a lightning strike? Rare. Getting a photo of both at the same time? Extremely rare, but it happened to a Manitoba photographer this week.
An anonymous business owner paid off the mortgage for a New Brunswick not-for-profit.
They say a dog is a man鈥檚 best friend. In the case of Darren Cropper, from Bonfield, Ont., his three-year-old Siberian husky and golden retriever mix named Bear literally saved his life.
A growing group of brides and wedding photographers from across the province say they have been taken for tens of thousands of dollars by a Barrie, Ont. wedding photographer.
Paleontologists from the Royal B.C. Museum have uncovered "a trove of extraordinary fossils" high in the mountains of northern B.C., the museum announced Thursday.
The search for a missing ancient 28-year-old chocolate donkey ended with a tragic discovery Wednesday.
The Royal Canadian Mounted Police is celebrating an important milestone in the organization's history: 50 years since the first women joined the force.
It's been a whirlwind of joyful events for a northern Ontario couple who just welcomed a baby into their family and won the $70 million Lotto Max jackpot last month.
A six-year-old girl who was reported missing in northern B.C. earlier this week remains unaccounted for, and "significant resources from across the province" have joined in the search, police said Saturday.
A sea lion swam free after a rescue team disentangled it near Vancouver Island earlier this week.
The Vancouver Canucks have signed Finnish goaltender Kevin Lankinen to a one-year contract.
A 23-year-old man has been arrested after one person was found dead at a home in Richmond Hill Saturday morning.
Toronto police say they have now identified a third person who they believe was involved in a shooting that left two men dead in North York earlier this week.
A man is fighting for his life in hospital a day after a vehicle smashed into several others in and around an intersection in Milton before flipping over.
The water coming from your taps might be a bit murky Saturday, but Calgary remains on schedule to end all water restrictions on Sunday.
A Calgary family on a trip to Chinook Centre experienced the lows and highs last week, when a stuffie went missing.
An estimated 8,000 volunteers mobilized across the city Saturday as the Calgary Food Bank went door-to-door collecting food and funds.
A potential move to LeBreton Flats for the Ottawa Senators is still years away, but questions and concerns are already being raised about what to do with the Canadian Tire Centre.
The Taste of Wellington 2024 wraps up Saturday in Ottawa.
A body has been found in the vicinity where a woman went missing on the Ottawa River near Pembroke, Ont. while kayaking Tuesday night, according to the Ontario Provincial Police (OPP).
Montrealers can get used to taking a stroll on several car-free streets during the summer in the years to come thanks to a new commitment from the city.
Three men were injured after trying to subdue a man armed with a knife during afternoon prayers at a Montreal-area mosque Friday afternoon.
Unusual flippered feet are making their way into the Saint Lawrence River this weekend. Led by underwater explorer and filmmaker Nathalie Lasselin, volunteer divers are combing the riverbed near Beauharnois in Mont茅r茅gie to remove hundreds of tires that have been polluting the aquatic environment for decades.
The Edmonton Police Service is looking for a person of interest in connection with a suspicious fire that destroyed a multi-unit building and damaged several townhomes earlier this week.
Tattoos are becoming more common in today's society and, as a result, appear to be more acceptable in the workplace than they used to be.
Two people have been charged after a daylight shooting in Red Deer earlier this week.
Halifax Regional Police warned the public of a series of high-value thefts targeting retail stores Friday.
Pictou County District RCMP is investigating a fatal crash that occurred in Thorburn, N.S., Saturday.
A proposal for additional parking to accommodate upgrades at the Irving Pulp & Paper Mill in Saint John, N.B., would add an estimated 500 parking spots at Wolastoq Park.
The search for a missing six-year-old boy in Shamattawa is continuing Friday as RCMP hope recent tips can help lead to a happy conclusion.
A herd of dogs paid visit to patients and residents at Riverview Health Centre during an annual event that lifts spirits and wags tails.
While slang may come and go, experts say the phenomenon behind them, which constantly churns out brand-new bon mots, is as old as language itself.
Fire officials are investigating after a fire completely destroyed the community fridge in the Cathedral neighborhood.
The last two months after losing her daughter Bella have been extremely difficult for Kyla Thomson.
Regina police arrested three youths in connection to a bear mace incident at a Regina high school on Friday.
The Cambridge Professional Fire Fighters鈥 Association held their annual Muscular Dystrophy Boot Drive on Saturday.
Protests were held in front of Kitchener City Hall on Friday, both for and against LGBTQ2S+ inclusive education and queer rights in schools.
Police said the pedestrian, a 52-year-old man, was taken to an out-of-region hospital with life-threatening injuries and the driver of the vehicle failed to remain at the scene.
The 75-year-old building, formerly the Waskesiu Chamber of Commerce building, was relocated to the Parks Canada compound on the edge of the townsite.
Saskatchewan RCMP major crimes unit is investigating after a man鈥檚 body was found on Sweetgrass First Nation.
Heading into Friday's game against the Calgary Stampeders, quarterback Trevor Harris said he and his Saskatchewan Roughriders were "ready to rock."
Ontario鈥檚 police watchdog is investigating after an Ontario Provincial Police officer discharged his firearm at a 36-year-old man in near Moonbeam, Ont., on Friday night.
For some young people, a popular method for getting a quick high is by misusing laughing gas 鈥 and lately, that鈥檚 in the form of nitrous oxide from products sold by the company Galaxy Gas.
An Ontario woman is among the dozens of people who have come forward to allege that they were sexually abused by London-based businessman Mohamed Al Fayed, the former chairman and owner of Harrods.
A motorcyclist has died following a serious collision that took place in London鈥檚 south end on Friday afternoon.
The London Police Service (LPS) is currently investigating a suspicious death in the east end.
The St. Thomas police is asking the public for help locating a missing man.
The Barrie Skateboard Association (BSA) hosted a unique competition at the City's Skate Park on Saturday to celebrate its 25th anniversary, which showcased the park's importance and the growth of skateboarding in the region.
A man is facing numerous drug trafficking charges after Dufferin OPP seized a large assortment of drugs and weapons in Orangeville earlier this week.
One person is in hospital after an e-bike crash in Orillia on Thursday.
The Amherstburg Freedom Museum is celebrating a year of festivities in anticipation of its 50th anniversary in 2025.
The St. Clair College golf teams were successful at the Niagara Knights Invitational tournament on Friday.
A LaSalle high school is celebrating its emerald anniversary this weekend, with everyone who has ever walked its halls invited to return.
A man who was found dead behind a curling rink in Nanaimo, B.C., earlier this month was the victim of a homicide, police confirmed.
A sea lion swam free after a rescue team disentangled it near Vancouver Island earlier this week.
A six-year-old girl who was reported missing in northern B.C. earlier this week remains unaccounted for, and "significant resources from across the province" have joined in the search, police said Saturday.
A pair of runaway pigs are in the custody of an animal sanctuary in the Okanagan after evading police and volunteers for hours earlier this week.
The Red Bridge, a historic landmark in Kamloops, B.C., was completely destroyed by fire early Thursday morning.
Animal protection officers in British Columbia have rescued three pit bulls 鈥 including one that gave birth to 10 puppies 鈥 from a rat-infested home in Kelowna.
Despite the heavy rain, plenty of muscle turned up for United Way鈥檚 annual Pull the Bus fundraiser in Lethbridge Friday.
Lethbridge County has rescinded its fire restriction as a result of the recent cool, wet weathr.
The Lethbridge Hurricanes kicked off the 2024-25 season on a winning note Friday night, defeating the Edmonton Oil Kings 3-1 in a game played at VisitLethbridge.com Arena.
Following an outbreak of COVID-19 on its continuing care floor and just ahead of the flu season, St. Joseph鈥檚 General Hospital in Elliot Lake has opted to re-introduce a universal masking policy until further notice.
A 26-year-old driver from Surrey, B.C., has been charged with three counts of criminal negligence causing death and bodily harm in a crash that killed two youths in northern Ontario last year.
Ontario Provincial Police say three suspects from southern Ontario have been charged and drugs worth $300,000 have been seized following a traffic stop Sept. 16.
Newfoundland and Labrador's chief medical officer is monitoring the rise of whooping cough infections across the province as cases of the highly contagious disease continue to grow across Canada.
A 16-year-old biennial event aimed at fostering business in the country's eastern Arctic and northern regions has been cancelled indefinitely as a dispute unfolds between Inuit in Canada and a Labrador group claiming to share their heritage.
Jim Lester鈥檚 farm hopped on the cow-cuddling trend in early August, and his time slots have been pretty well sold out ever since.
The Shopping Trends team is independent of the journalists at 麻豆影视. We may earn a commission when you use our links to shop.聽Read about us.
