Â鶹´«Ã½

Coronavirus

    • Omicron may be less likely to cause hospitalizations, but severe outcomes were comparable to Delta: study

    Share

    A study comparing the clinical outcomes of patients infected with either the Omicron or Delta variant of COVID-19 has found that those who were hospitalized with Omicron required a similar amount of intensive care and medical intervention as those hospitalized with Delta.

    When the Omicron variant started replacing Delta as the predominant variant in many regions, initial studies seemed to suggest that while Omicron was more transmissible, it was also milder.

    But not many studies have directly compared the clinical outcomes of the two variants.

    “It is a common belief that the Omicron variant is less severe than previous variants,†Dr. Heba Mostafa, assistant professor of pathology at the Johns Hopkins University School of Medicine and the study’s lead author, “We wanted to put that to the test and see whether clinical outcomes and viral loads actually differed between Delta and Omicron infections.â€

    Researchers with John Hopkins Medicine in Maryland from more than 2,000 patients who tested positive for COVID-19 between the last week of November and the end of December in 2021.

    They then isolated which variant the patient had contracted, and what the viral load in their body was — a term that refers to the amount of the virus found in a person’s body, with higher viral loads typically meaning a progression of the virus.

    There were 1,119 patients who had contracted Omicron in the study period and 908 who had contracted Delta.

    What researchers found was that Omicron did come with a significantly lower likelihood of hospitalization: only 3 per cent of those infected with Omicron required hospitalization, compared to nearly 14 per cent of those infected with Delta, regardless of vaccination level.

    However, if patients did require hospitalization, the difference in care level needed was much closer.

    There was a comparable need for supplemental oxygen and intensive care seen with hospitalized Omicron patients and hospitalized Delta patients. Around 68 per cent of patients hospitalized with Omicron required supplemental oxygen compared to 73 per cent of hospitalized Delta patients. When it came to intensive care, 17.6 per cent of hospitalized Omicron patients had to be taken to the ICU, compared to 25.4 per cent of hospitalized Delta patients.

    Researchers say that these results show that while Delta is associated with a higher likelihood of worse outcomes, the difference is much narrower than many people likely believe when it comes to the outcomes of hospitalized Omicron patients.

    The fact that severe disease with Omicron was comparable to Delta if patients were hospitalized indicates that we should stay vigilant with this and future variants, they say.

    “It’s true that patients with Omicron were significantly less likely to be admitted to the hospital than patients with Delta,†Mostafa said. “But Omicron patients who did need hospitalization faced a risk of severe disease comparable to those hospitalized with Delta. For many people, it is not a mild infection at all.â€

    In terms of viral load, researchers found that there was a similar level between those with Omicron and Delta, regardless of vaccination status. They also found that among patients who contracted Delta, having received a booster shot meant a bigger reduction in viral load compared to both unvaccinated patients with Delta and vaccinated patients with no booster shot.

    The study pointed out that because of Omicron’s higher transmissibility, a lower hospitalization rate can still result in a high number of hospitalizations overall, and that continued surveillance is necessary.

    “With this analysis, we integrated the decoding of the virus’s genetic material with lab and clinical data in real time,†Mostafa said. “This approach has been — and will continue to be — hugely valuable in understanding potential outcomes of newly evolving variants.†

    CTVNews.ca Top Stories

    A team of tornado experts is heading to Fergus, Ont. after a storm ripped through the area Sunday night.

    Why brain aging can vary dramatically between people

    Researchers are uncovering deeper insights into how the human brain ages and what factors may be tied to healthier cognitive aging, including exercising, avoiding tobacco, speaking a second language or even playing a musical instrument.

    Canada

    • A team of tornado experts is heading to Fergus, Ont. after a storm ripped through the area Sunday night.

    • Two nephews of the beloved Harry R. Hamilton share stories about his life and legacy.

    • The union representing some 1,200 dockworkers at the Port of Montreal has overwhelmingly rejected a deal with their employers association.

    • A man who was critically injured in a police-involved shooting in Hamilton late Sunday afternoon has died in hospital, says the province’s police watchdog.

    World

    Politics

    • Murray Sinclair’s family members say the late justice and senator has been laid to rest according to his wishes.

    • Prime Minister Justin Trudeau announced voters in Cloverdale—Langley City will pick their next member of Parliament on Dec. 16.

    Health

    Sci-Tech

    Entertainment

    Business

    Lifestyle

    Sports

    Autos

    Local Spotlight

    For the second year in a row, the ‘Gift-a-Family’ campaign is hoping to make the holidays happier for children and families in need throughout Barrie.

    Some of the most prolific photographers behind CTV Skywatch Pics of the Day use the medium for fun, therapy, and connection.

    A young family from Codroy Valley, N.L., is happy to be on land and resting with their newborn daughter, Miley, after an overwhelming, yet exciting experience at sea.

    As Connor Nijsse prepared to remove some old drywall during his garage renovation, he feared the worst.

    A group of women in Chester, N.S., has been busy on the weekends making quilts – not for themselves, but for those in need.

    A Vancouver artist whose streetside singing led to a chance encounter with one of the world's biggest musicians is encouraging aspiring performers to try their hand at busking.

    Ten-thousand hand-knit poppies were taken from the Sanctuary Arts Centre and displayed on the fence surrounding the Dartmouth Cenotaph on Monday.

    A Vancouver man is saying goodbye to his nine-to-five and embarking on a road trip from the Canadian Arctic to Antarctica.

    • LIVE

      LIVE

      Thousands of people are gathered in downtown Vancouver to observe the city’s 100th Remembrance Day ceremony.

    • A suspect was arrested for allegedly brandishing a knife outside a Vancouver elementary school on Friday – just as the young students were heading home for the day.

    • The federal government is urging both sides in the British Columbia port dispute to return to the table after mediated talks broke off on Saturday, the first of three scheduled days.

    • Several hundred people gathered outside the Ontario legislature in Toronto to honour veterans and remember those who died fighting for their country.

    • Toronto is expected to see an economic boost to the tune of nearly $300 million thanks to Taylor Swift’s upcoming Eras Tour, which will be making a stop in Canada’s largest city for a six-show run later this month.

    • A man believed to be in his 40s has been rushed to a trauma centre following a stabbing in downtown Toronto.

    • Calgarians will be observing Remembrance Day at a number of different ceremonies across the city, including at the Hangar Flight Museum.

    • July 2025 may seem like it’s in the distant future, but for the St. Luke playground committee time is ticking to fundraise the $340,000 they still need to build a new playground.

    • Getting out to the mountains is even easier with a new bus route from a growing Germany-based service.

    • Crowds gathered in Ottawa and eastern Ontario on Monday to honour the sacrifice of men and women in uniform who gave their lives in service of Canada.

    • CTVNewsOttawa.ca looks at Remembrance Day ceremonies in Ottawa.

    • After months of controversy surrounding a dog park in Ottawa's west end, a solution has been reached to divide the park in half.

    • A 36-year-old Montreal man who was out on bail after allegedly uttering death threats to a woman is now accused of murdering her on the South Shore.

    • With fewer interments and rising maintenance fees, the money for Canada's largest military cemetery will run out in three to four years.

    • Montreal Metro passengers can now flag a safety concern by texting a new phone number launched by the STM.

    • A member of Canadian Forces Base (CFB) Edmonton participated in the national Remembrance Day Ceremony in Ottawa on Monday.

    • WEATHER

      WEATHER

      This is shaping up to be one of the warmest Remembrance Days in the past decade, at least, for temperatures.

    • Thousands of Maritimers turned out in wet weather Monday to remember those who have served, and continue to serve, in Canada's armed forces for Remembrance Day.

    • A Cape Breton senior recalls her life in German-occupied France, and her mother’s death, during the Second World War.

    • Thousand of people gathered at the Menin Gate in the Ypres, Belgium for Monday’s Remembrance Day Ceremony.

    • Remembrance Day is today, and a number of ceremonies are taking place around the province to honour those who gave their lives to serve our country.

    • A pillar in Canada’s history was honoured in Winnipeg Sunday afternoon, with thousands showing up to pay tribute to the life and legacy of the late Murray Sinclair.

    • One Manitoba veteran is on a mission to commemorate and honour those who served our country, and not just on Remembrance Day.

    • There will be two ceremonies taking place in Regina for Remembrance Day, hosted by the Royal Canadian Legion.

    • Regina author Valerie Crowther is celebrating the release of her book ‘War Letters: Linking Lives in the Second World War.’

    • It was a somber day at Mosaic Stadium as members of the Saskatchewan Roughriders officially cleaned out their stalls and closed the book on the 2024 season.

    • Saskatchewan RCMP are searching for a suspect after a man was seriously injured in a farm-related incident in Montreal Lake.

    • It was a somber day at Mosaic Stadium as members of the Saskatchewan Roughriders officially cleaned out their stalls and closed the book on the 2024 season.

    • The Regina Rams claimed the Hardy Cup after a hard fought battle against the Saskatoon Huskies 19-14 on Saturday in the first all Saskatchewan U-Sports western conference final since 2002.

    • Emergency crews responded to the scene on Road 68/Highway 2 east of Thamesford around 7 p.m.

    • The events will start at 10:15 a.m. with a parade that forms up in front of the Delta London Armories, marches east on Dundas Street and turns north onto Waterloo Street to Dufferin Avenue, the west to the Cenotaph.

    • A team of tornado experts is heading to Fergus, Ont. after a storm ripped through the area Sunday night.

    • A Barrie man is at the centre of an alleged $2.2 million stolen used car scheme.

    • Environment Canada issued a weather alert for Barrie, Collingwood and surrounding areas, alerting residents about the wicked winds that are expected to pick up to 80 kilometres per hour in the afternoon hours.

    • Barrie residents gathered on Monday to honour Canada’s veterans and pay tribute to those who served and sacrificed for the country.

    • Representatives of the Windsor Veterans Memorial Services Committee, military representatives, wreath bearers, government officials, and members of the public will attend the Cenotaph at City Hall Square for the outdoor service.

    • Windsor Paralympic champion, Danielle Campo, has been crowned the number one Inspirational Speaker of the Year for 2024 at the Inspirational Speaking Finals.

    • One person has been arrested after Chatham-Kent Police Service (CKPS) received multiple complaints about an alleged drunk driver.

    • Environment Canada says heavy rain and winds could cause power outages on Vancouver Island as an "intense" storm system is set to hit the B.C. coast Sunday.

    • Six deer were struck by vehicles in six different locations in a six-hour period on B.C. highways on Saturday, according to the transportation ministry.

    • The union for locked-out port workers in British Columbia says the BC Maritime Employers Association cut off talks in less than an hour Saturday, refusing to budge on a final offer that the union has so far rejected.

    • The emergency department at South Okanagan General Hospital in Oliver, B.C., will be closed for 31 hours this weekend, the second such closure in a week and the third since the start of November.

    • Police in Kamloops, B.C., are reminding parents and guardians to check their children's Halloween candy after receiving a report of a mother finding a razor blade in one of her daughter's treats.

    • More than two years after Alannah Brown and Douglas Barker were found dead north of Penticton, police are asking for help identifying a vehicle they believe was associated with the crime.

    • The Southern Alberta Recreation Association is officially announcing the Town of Taber as next year’s host for the Southern Alberta Summer Games.

    • The Lethbridge Hurricanes broke open a close game with three goals in the first two minutes of the third period as they defeated the Warriors 7-3 in a game played Friday night in Moose Jaw.

    • There might not a lot snow just yet, but many southern Albertans are still itching to get outdoors.

    • It was just days before the COVID-19 pandemic shut the world down when the Shaft Bottom Boys of Sudbury broke a world record for 'Deepest Concert Underground.' Now, more than four years later, a Timmins band is looking to take the title.

    • Police say that a 16-year-old was attacked with a sword Nov. 3 in Cobalt, Ont., in a case of intimate partner violence.

    • Police have arrested a 15-year-old in connection with a break-in and $50,000 in damage done to the Centennial Arena in Elliot Lake in September.

    N.L.

    Shopping Trends

    The Shopping Trends team is independent of the journalists at Â鶹´«Ã½. We may earn a commission when you use our links to shop. Read about us.

    Stay Connected
    Follow Â鶹´«Ã½