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Why Canada avoided a severe winter COVID wave

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Three years after the pandemic began, Canada has managed to avoid a severe COVID-19 wave this winter despite a total lack of public health restrictions, a busy indoor holiday season and a rapidly mutating virus that is still very much circulating in the population.

“We are now at a point in Canada where COVID-19 activity has reached a relatively stable state,” Canada’s chief public health officer, Dr. Theresa Tam, said at a briefing on March 10.

“While uncertainty remains about the seasonal patterns of COVID-19, the current trend suggests we may not see any major waves in the coming months.”

And new research continues to back up why: Hybrid immunity from vaccination and prior infection is holding up against hospitalizations and deaths and will likely continue to help control the severity of COVID-19 in Canada and around the world for the foreseeable future.

“We’re certainly in a much better position now than we have been at any time during the pandemic,” World Health Organization director general Tedros Adhanom Ghebreyesus said during a news conference on Friday.

“It’s very pleasing to see that for the first time, the weekly number of reported deaths in the past four weeks has been lower than when we first used the word pandemic three years ago.”

More than 76 per cent of Canadian adults and close to 90 per cent of young adults (aged 17 to 24) are estimated to have previously had the disease as of mid-January, according to national blood donor data released by the federal government’s COVID-19 Immunity Task Force.

High levels of infection — combined with the more than 80 per cent of Canadians who’ve received at least two doses of a COVID vaccine, better treatment access and less severe infections than previous strains — have led to stronger immune protection against a virus that continues to spread globally.

“The high levels of hybrid immunity are one of the major factors explaining the contained number of COVID-19 hospitalizations and deaths this winter,” said Dr. Sara Carazo, an epidemiologist and researcher with the Quebec National Institute of Public Health.

“This is explained also by the intrinsic characteristics of new circulating variants, which were not causing a more severe disease than previous Omicron subvariants.”

But infection is not without risk — and vaccination is still the preferred route of acquiring immunity, due to the strong protection it provides against severe illness and the ongoing risk of COVID complications in vulnerable groups.

A health-care worker prepares a COVID-19 vaccine at a clinic in the Vancouver Convention Centre in January 2022. A growing body of research has consistently shown that the hybrid protection from vaccination and infection is superior to immunity from prior infection alone. (Ben Nelms/CBC)

Hybrid immunity offers strongest protection

A growing body of research has consistently shown that the hybrid protection from vaccination and infection is superior to immunity from prior infection alone — meaning those who have previously been infected should still get vaccinated.

“Vaccine-induced immunity is what got us to the point of even asking the question of whether hybrid immunity is what’s getting us out of the pandemic,” said John Wherry, director of the Institute for Immunology at the University of Pennsylvania in Philadelphia.

“It doesn’t look like it’s really helping with transmission, but it almost certainly is adding to the overall population immunity in a way that’s making [new subvariants] a lot less concerning.”

A Canadian study of health-care workers in Quebec published in The Lancet Infectious Diseases in January found that two doses of an mRNA vaccine and a previous Omicron infection offered substantial protection against future infection from Omicron subvariants.

“Importantly, this protection seems to have little waning over time during one year followup, which contrasts with the loss of effectiveness with time among persons vaccinated but not previously infected,” said Carazo, the lead author of the study.

“We also observed that protection from hybrid immunity was maintained even for distant variants and subvariants compared with protection from infection alone.”

Medical staff are shown at Jean-Talon Hospital in Montreal in October 2021. A recent Canadian study of health-care workers in Quebec found that two doses of an mRNA vaccine and a previous Omicron infection offered substantial protection against future infection from Omicron subvariants. (Ivanoh Demers/Radio-Canada)

Carazo’s research also found that those with a previous infection had a 90 per cent risk reduction of BA.4/5 hospitalization when combined with vaccination, compared with only about 70 per cent if they were unvaccinated and had immunity from infection alone.

“It’s safe to say that the relative lack of severity of the waves that we’ve seen here is because of immunity — it’s hard to argue anything differently than that,” said Deepta Bhattacharya, an immunologist and professor at the University of Arizona in Tucson.

“And obviously, given what fraction of the population has had a prior infection, you would have to think that hybrid immunity is a big part of that.”

Vaccination ‘the safest way to get immunity’

A new study of 613 patients published this week in Science Translational Medicine found that people who had received a COVID-19 vaccine after an infection showed much stronger immune responses than those who were either only vaccinated or only infected.

“The level of protection expected from hybrid immunity is significantly higher than that afforded by vaccination only or infection only,” said Thierry DeFrance, a lead author of the study and an infectious diseases researcher at the University of Lyon in France.

And a recent systematic review of 65 studies from 19 countries in The Lancet found that a previous COVID-19 infection reduced the risk of hospitalization and death from a reinfection by up to 88 per cent for at least 10 months — equivalent to two doses of an mRNA vaccine.

“Clearly, the good news is sustained protection against severe disease,” said Dr. Christopher Murray, the lead author of the review and director of the Institute for Health Metrics and Evaluation at the University of Washington in Seattle.

“The less good news is that protection against infection is not as good and wanes much more quickly, meaning that there will be continued waves of transmission even though we have a very high level of immunity from either vaccination or infection.”

Three years in: What the pandemic changed and what comes next

 

Mar. 13, 2023 | Health-care experts tell us how COVID-19 changed their lives. Then, Kieran Oudshoorn explains a virus-detecting tool that went silent right before the pandemic hit. Also, what happens when the pandemic is declared over?

It’s also important to note that not all immunity carries the same risk, and an infection with Omicron or one of its subvariants is much different than an infection with previous variants, such as Alpha, Beta, Delta or even the original strain, prior to vaccines.

“The safest way to get immunity is through vaccination,” Murray said. “The risk you were taking was huge back in the days of Delta or even the ancestral strain, because the infection fatality rate was 10 times higher than Omicron.”

South Africa, a country that saw massive amounts of hospitalization and death following severe waves of infection early in the pandemic prior to the rollout of vaccines, is also now in a much different situation with COVID-19 due to high levels of immunity in the population.

“It has been over a year that we have had any large wave of infection that translates into hospitalization,” said Tulio de Oliveira, director of South Africa’s Centre for Epidemic Response and Innovation.

“Is that long lasting? That’s the million-dollar question,” he said. “But what we know is that the current immunity wall is holding very well.”

Better access to antiviral treatments has helped

How well hybrid immunity continues to hold up in the population will determine how often additional booster doses should be offered, and it underscores the need to further protect elderly and immunocompromised Canadians who are less likely to have a prior infection.

Dr. Gaston De Serres, an epidemiologist at the Quebec National Institute of Public Health who researches hybrid immunity and co-authored the research with Dr. Sara Carazo, said the immunity landscape is drastically different in younger adults than elderly Canadians.

“Why it matters is because hospitalizations are, for the most part, occurring in elderly people,” he said.

“Having a large proportion of the younger population that has been infected helps. But the pool of individuals who are over 70 and who have not yet been infected is still quite substantial, and we may expect that future hospitalizations will, for the most part, occur in these individuals.”



De Serres said better access to antiviral treatments that can be given to older Canadians at the onset of a COVID-19 infection has helped reduce the number of hospitalizations, as well as the fact that Omicron and its subvariants appear less severe than previous strains.

“It’s not to say that Omicron or its subvariants are completely mild and not harmful — that’s not true,” he said, adding that 2022 “had more deaths than the two previous years of the pandemic.”

“Having said that, there has not been an overwhelming wave that flooded the hospital system last fall or now, and in that sense things are more under control.”

Wherry, at the University of Pennsylvania, said key goals for the future should be trying to improve on COVID-19 vaccine technology to recreate the protection that hybrid immunity provides in people who haven’t yet been vaccinated, such as children and those who are more vulnerable to severe illness.

“That still remains a major challenge, and hybrid immunity and vaccines are still not giving us a really durable benefit there,” he said.

“Immunity from severe disease may also wane. We haven’t been out long enough to really know. So I wouldn’t assume that we’re going to have five-year or 10-year immunity keeping us out of the hospital.”

The scientists tracking new COVID-19 variants — before it’s too late

 

The virus that causes COVID-19 continues to mutate amid reduced testing, adding to concerns that a new variant could explode before it’s detected and tracked. But Canadian labs are on the case.

The University of Arizona’s Bhattacharya said there could be some seasonal variation in terms of the severity of COVID infections — similar to the flu, where different strains emerge that are distinct from what the population had last acquired immunity to — that could drive future waves.

“But I still strongly believe that we’re not going to go back into the pre-vaccination era of early 2020,” he said. “I don’t think we’re going to see those dark days again.”

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Statistics Canada reports wholesale sales higher in July

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OTTAWA – Statistics Canada says wholesale sales, excluding petroleum, petroleum products, and other hydrocarbons and excluding oilseed and grain, rose 0.4 per cent to $82.7 billion in July.

The increase came as sales in the miscellaneous subsector gained three per cent to reach $10.5 billion in July, helped by strength in the agriculture supplies industry group, which rose 9.2 per cent.

The food, beverage and tobacco subsector added 1.7 per cent to total $15 billion in July.

The personal and household goods subsector fell 2.5 per cent to $12.1 billion.

In volume terms, overall wholesale sales rose 0.5 per cent in July.

Statistics Canada started including oilseed and grain as well as the petroleum and petroleum products subsector as part of wholesale trade last year, but is excluding the data from monthly analysis until there is enough historical data.

This report by The Canadian Press was first published Sept. 13, 2024.

The Canadian Press. All rights reserved.



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Dolphins’ Tua Tagovailoa sustains third concussion of his career after hitting head on turf

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MIAMI GARDENS, Fla. (AP) — Miami Dolphins quarterback Tua Tagovailoa sustained a concussion for the third time in his NFL career, leaving his team’s game Thursday night against Buffalo after running into defensive back Damar Hamlin and hitting the back of his head against the turf.

Tagovailoa remained down for about two minutes before getting to his feet and walking to the sideline after the play in the third quarter. He made his way to the tunnel not long afterward, looking into the stands before smiling and departing toward the locker room.

The Dolphins needed almost no time before announcing it was a concussion. The team said he had two during the 2022 season, and Tagovailoa was diagnosed with another concussion when he was a college player at Alabama.

Dolphins coach Mike McDaniel said Tagovailoa would get “proper procedural evaluation” and “appropriate care” on Friday.

“The furthest thing from my mind is, ‘What is the timeline?’ We just need to evaluate and just worry about my teammate, like the rest of the guys are,” McDaniel said. “We’ll get more information tomorrow and take it day by day from here.”

Some players saw Tagovailoa in the locker room after the game and said they were encouraged. Tagovailoa spoke with some players and then went home after the game, McDaniel said.

“I have a lot of love for Tua, built a great relationship with him,” said quarterback Skylar Thompson, who replaced Tagovailoa after the injury. “You care about the person more than the player and everybody in the organization would say the same thing. Just really praying for Tua and hopefully everything will come out all right.”

Tagovailoa signed a four-year, $212 million extension before this season — a deal that makes him one of the highest-paid players in the NFL — and was the NFL’s leading passer in Week 1 this season. Tagovailoa left with the Dolphins trailing 31-10, and that was the final score.

“If you know Tua outside of football, you can’t help but feel for him,” Bills quarterback Josh Allen said on Amazon following the game. “He’s a great football player but he’s an even greater human being. He’s one of the best humans on the planet. I’ve got a lot of love for him and I’m just praying for him and his family, hoping everything’s OK. But it’s tough, man. This game of football that we play, it’s got its highs and it’s got its lows — and this is one of the lows.”

Tagovailoa’s college years and first three NFL seasons were marred by injury, though he positioned himself for a big pay bump with an injury-free and productive 2023 as he led the Dolphins into the playoffs. He threw for 29 touchdowns and a league-best 4,624 yards last year.

When, or if, he can come back this season is anyone’s guess. Tagovailoa said in April 2023 that the concussions he had in the 2022 season left him contemplating his playing future. “I think I considered it for a time,” he said then, when asked if he considered stepping away from the game to protect himself.

McDaniel said it’s not his place to say if Tagovailoa should return to football. “He’ll be evaluated and we’ll have conversations and progress as appropriate,” McDaniel said.

Tagovailoa was hurt Thursday on a fourth-down keeper with about 4:30 left in the third. He went straight ahead into Hamlin and did not slide, leading with his right shoulder instead.

Hamlin was the player who suffered a cardiac arrest after making a tackle during a Monday night game in January 2023 at Cincinnati, causing the NFL to suspend a pivotal game that quickly lost significance in the aftermath of a scary scene that unfolded in front of a national television audience.

Tagovailoa wound up on his back, both his hands in the air and Bills players immediately pointed at him as if to suggest there was an injury. Dolphins center Aaron Brewer quickly did the same, waving to the sideline.

Tagovailoa appeared to be making a fist with his right hand as he lay on the ground. It was movement consistent with something that is referred to as the “fencing response,” which can be common after a traumatic brain injury.

Tagovailoa eventually got to his feet. McDaniel grabbed the side of his quarterback’s head and gave him a kiss on the cheek as Tagovailoa departed. Thompson came into the game to take Tagovailoa’s spot.

“I love Tua on and off the football field,” Bills edge Von Miller said. “I’m a huge fan of him. I can empathize and sympathize with him because I’ve been there. I wish him the best.”

Tagovailoa’s history with concussions — and how he has since worked to avoid them — is a huge part of the story of his career, and now comes to the forefront once again.

He had at least two concussions during the 2022 season. He was hurt in a Week 3 game against Buffalo and cleared concussion protocol, though he appeared disoriented on that play but returned to the game.

The NFL later changed its concussion protocol to mandate that if a player shows possible concussion symptoms — including a lack of balance or stability — he must sit out the rest of the game.

Less than a week later, in a Thursday night game at Cincinnati, Tagovailoa was concussed on a scary hit that briefly knocked him unconscious and led to him being taken off the field on a stretcher.

His second known concussion of that season came in a December game against Green Bay, and he didn’t play for the rest of the 2022 season. After that, Tagovailoa began studying ways where he may be able to fall more safely and protect himself against further injury — including studying jiu-jitsu.

“I’m not worried about anything that’s out of my hands,” McDaniel said. “I’m just worried about the human being.”

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David Beckham among soccer dignitaries attending ex-England coach Sven-Goran Eriksson’s funeral

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TORSBY, Sweden (AP) — David Beckham and former England coach Roy Hodgson were among the soccer dignitaries who attended the funeral of Sven-Goran Eriksson on Friday in the Swedish manager’s small hometown of Torsby.

Eriksson’s wooden coffin was covered in white flowers and surrounded by six tall candles and other floral wreaths as the ceremony began inside the 600-seat Fryksande church.

“It is a day of grief but also a day of thankfulness,” the priest, Ingela Älvskog, told those in attendance.

Beckham, who arrived by private jet on Thursday, greeted Eriksson’s 95-year-old father Sven and other family members with hugs inside the church before the funeral started.

Eriksson became England’s first foreign-born coach when he led the national team from 2001-06, and made Beckham his captain.

Eriksson, who also won trophies at club level in Italy, Portugal and Sweden, died on Aug. 26 at the age of 76, eight months after he revealed he had been diagnosed with pancreatic cancer and had at most one year to live.

Some 200 seats in the neo-Gothic church from 1898 were reserved for his family, friends and players from his career in the football world, according to his agent. The remaining seats were open for the public, according to Eriksson’s wish, with a big screen set up outside the church where hundreds more gathered to watch the ceremony. The funeral was also broadcast live on some Swedish media websites.

The wooden coffin was wheeled in by pallbearers at the church Friday morning as fog wrapped Torsby — a town of about 4,000 people located about 310 kilometers (193 miles) west of Stockholm. Next to the casket was a photo of Eriksson on a small table. The floral wreaths included ones sent by FIFA and Lazio, the Italian team that Eriksson led to the Serie A title in 2000.

The ceremony began with somber piano and organ music, but later took on a more upbeat note with Swedish singer Charlotta Birgersson performing Elton John’s song “Candle In The Wind” and then “My Way” in a duet with Johan Birgersson, who later intoned the popular Italian song “Volare” after the family had gathered around the casket to lay flowers.

Beckham also visited Eriksson in Sweden in June to say goodbye. Others attending the funeral included the Swedish coach’s longtime partner Nancy Dell’Olio. Eriksson’s agent had said that guests from England, Italy and Spain were expected.

After the funeral, the casket was carried out of the church by eight men to the hearse. The guests then walked in a procession accompanying the coffin to a nearby museum where speeches and eulogies to the coach fondly known as “Svennis” were planned on an outdoor stage. A brass band played during the procession through Torsby, including the tune “You never walk alone” from the musical “Carousel” which has become the anthem of Liverpool, the club Eriksson supported since childhood.

The local soccer club Torsby IF, where Eriksson started his career in the 1960s, wrote on its webpage that “you also showed your greatness by always being yourself, the caring Svennis who talked to everyone and took the time, for big and small, asking how things were and how the football was going. We will miss you.”

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AP soccer:

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