The majority of Canadians have caught COVID-19 since Omicron and its highly contagious subvariants triggered enormous waves of infection this year — with new estimates suggesting almost two-thirds of the population have had it.
Researchers in British Columbia analyzed close to 14,000 blood samples in the Lower Mainland throughout the pandemic to track antibody levels in the general population, and found a massive shift in the number of infections in the past few months.
The B.C. Centre for Disease Control and Prevention (BCCDC) and University of British Columbia team previously found almost half previously had COVID as of April, but their new data suggests that number continued to skyrocket into the spring and summer.
The findings were published in a preprint study co-authored by B.C. Provincial Health Officer Dr. Bonnie Henry this week, which has not yet been peer reviewed, that found more than 60 per cent of the overall population had antibodies from prior infection by August.
“It really shows us the change that we saw, particularly when Omicron came … what we’re seeing now is that people may have an infection on top of being vaccinated and that has led to a level of potential immunity,” Henry told CBC News.
“We don’t know how much antibody you actually have to have to be protected, but it does give us a good sense that we have a very high level of population protection against this virus now.”
WATCH | Kids return to school with minimal COVID-19 restrictions:
Kids head back to school with minimal COVID-19 restrictions
8 days ago
Duration 2:05
Kids in B.C. and much of Ontario are returning to class with some of the lightest COVID-19 restrictions in three years. It has families filled with a mix of excitement and anxiety.
The data is also broken down by age groups and found the highest level of infections by far were in Canadians under 19, with at least 70 to 80 per cent of youth now showing evidence of prior infection — compared to about two-thirds as of April.
But adults are also seeing an increase in COVID, with at least 60 to 70 per cent of those aged 20 to 59 years old now showing evidence of previous infection, and about 40 per cent of Canadians over 60 — up from just 15 per cent as of March.
“What we observed is that children currently appear to be the most infected and least vaccinated, whereas elderly adults remain the most vaccinated and least infected,” said Dr. Danuta Skowronski, epidemiology lead at the BCCDC and lead investigator of the research.
“The main takeaway for me and my colleagues from this most recent update is that the elderly are particularly now reliant on vaccine-induced protection alone as we enter the fall of 2022, and so they should remain the priority for additional booster doses.”
The data shows huge surges of infections after Omicron landed in Canada in late 2021 and raises new questions about what that level of population immunity means for the future as updated vaccines begin to roll out across the country targeting the highly contagious strain.
“We’re in a completely different place than we were even a year ago, but particularly from the beginning of the pandemic,” Henry said.
“So what that tells me is that there are very few people now who are at extreme risk like they were early on when we didn’t have any immunity at all in anybody — and we need to pay attention to that.”
Data shows adults are also seeing an increase in infections. At least 60 to 70 per cent of those aged 20 to 59 are now showing evidence of previous COVID, and about 40 per cent of Canadians over 60 — up from just 15 per cent as of March. (Ben Nelms/CBC)
‘Good news and bad news’
The research also coincides with national data from the federal government’s COVID-19 Immunity Task Force that suggests close to 60 per cent of Canadians from coast to coast had been previously infected up to July — a massive increase over the past year.
The task force also released new surveillance data Monday from Canada Blood Services that showed an increase in COVID infections among more than 30,000 Canadians who donated blood in July — jumping from 50 to 54 per cent across all age groups.
But in younger age groups that rate was much higher, particularly among those 17 to 24 who had a rate of prior infection at more than 71 per cent.
“It’s good news and bad news,” said Dr. David Naylor, who led the federal inquiry into Canada’s national response to the 2003 SARS epidemic and now co-chairs the federal government’s COVID-19 Immunity Task Force.
“The upside is that there is a lot of background immunity arising from vaccines and past infection,” he said, noting that the combined “hybrid immunity” should help limit the impact of COVID as classes move indoors and in-person work returns.
“That said, the growth in hybrid immunity is a decidedly mixed blessing. It signals substantial ongoing spread of [the virus]. That in turn means more people with post-COVID symptoms of variable severity and duration.”
Experts are cautiously optimistic that updated ‘bivalent’ vaccines, which target both the original virus and the first Omicron variant, BA.1, will provide protection against further spread — but their impact has yet to be seen in the real world. (Darryl Dyck/The Canadian Press)
Naylor said that while most infections are mild, many people can be “laid up for days” recovering, and COVID continues to play a role in a substantial number of deaths among the most vulnerable — a toll that is likely to rise during the move into fall and winter.
“We obviously don’t want anyone to get COVID-19, and the whole goal is to reduce the risk of infection and reduce the frequency of infections,” said Dr. Isaac Bogoch, an infectious diseases physician at Toronto General Hospital.
“But in the same breath, we can’t ignore the protective benefit that recovery from infection provides people, especially when it’s in the context of vaccination as well.”
Bogoch said that underlying immunity in the population not only provides individual-level protection, but also given that so many people have been infected and recovered from COVID — it also adds to community level protection as well.
“We now have this baseline level of immunity in the population that protects everybody, it protects those people who don’t mount a good response to the vaccine as well,” Henry said. “So people who are really susceptible to severe illness are much, much reduced now.”
High level of infection, vaccination a ‘silver lining’
How this evolving population immunity holds up against future possible surges of COVID remains to be seen, but the fact remains that there are many vulnerable groups that are still at increased risk and should be prioritized for additional vaccinations.
“We know who’s more vulnerable to COVID. Obviously, we know it’s older individuals, we know it’s people with underlying medical conditions that put them at greater risk,” Bogoch said, noting that lower income and racialized communities are also disproportionately affected.
“So many people were infected over the last six months, when you add that to high levels of vaccination, at least with first and second doses — there’s room for improvement on booster doses … but we do have some significant community level protection.”
Skowronski said the findings have important implications on where future boosters are prioritized — with older Canadians, immunocompromised and other vulnerable groups being the prime concern.
“Superimposing that Omicron infection boost on top of an already highly vaccinated population is contributing to more robust hybrid immunity and that is indeed a silver lining. It puts us in a much better position going into potential further waves,” she said.
“And this is why I say the sense of urgency related to additional booster doses can be eased for the majority of the population that has accumulated now that combination of vaccine and infection-induced exposures contributing to hybrid immunity.”
Bogoch says he’s “cautiously optimistic” that updated “bivalent” vaccines, which target both the original virus and the first Omicron variant, BA.1, will provide some long-lasting protection against further spread of the virus — but their impact has yet to be seen in the real world.
“Having said that, I’d rather have a vaccine that is more closely tailored to the circulating virus now, than not, but I don’t know what the durability of protection will be,” he said.
“And quite frankly, even the old vaccine has very durable protection against severe infection, hospitalization and death. It does, it stands up over time, it’s fantastic. And hopefully we’ll retain that protection against severe infection and regain some durable protection against infection.”
Henry said that vaccination has made a “massive difference” in Canada, and despite the fact that we’ve seen high levels of COVID infection and transmission — the situation has changed dramatically.
“I think it’s a hard concept, because we spent a lot of time telling people getting COVID is really, really bad,” she said, adding that is especially true for immunocompromised Canadians and other vulnerable groups.
“Now, because so many people have been vaccinated and we have this hybrid immunity in so many people, it really reduces the risk to everybody around us.”
VANCOUVER – Contract negotiations resume today in Vancouver in a labour dispute that has paralyzed container cargo shipping at British Columbia’s ports since Monday.
The BC Maritime Employers Association and International Longshore and Warehouse Union Local 514 are scheduled to meet for the next three days in mediated talks to try to break a deadlock in negotiations.
The union, which represents more than 700 longshore supervisors at ports, including Vancouver, Prince Rupert and Nanaimo, has been without a contract since March last year.
The latest talks come after employers locked out workers in response to what it said was “strike activity” by union members.
The start of the lockout was then followed by several days of no engagement between the two parties, prompting federal Labour Minister Steven MacKinnon to speak with leaders on both sides, asking them to restart talks.
MacKinnon had said that the talks were “progressing at an insufficient pace, indicating a concerning absence of urgency from the parties involved” — a sentiment echoed by several business groups across Canada.
In a joint letter, more than 100 organizations, including the Canadian Chamber of Commerce, Business Council of Canada and associations representing industries from automotive and fertilizer to retail and mining, urged the government to do whatever it takes to end the work stoppage.
“While we acknowledge efforts to continue with mediation, parties have not been able to come to a negotiated agreement,” the letter says. “So, the federal government must take decisive action, using every tool at its disposal to resolve this dispute and limit the damage caused by this disruption.
“We simply cannot afford to once again put Canadian businesses at risk, which in turn puts Canadian livelihoods at risk.”
In the meantime, the union says it has filed a complaint to the Canada Industrial Relations Board against the employers, alleging the association threatened to pull existing conditions out of the last contract in direct contact with its members.
“The BCMEA is trying to undermine the union by attempting to turn members against its democratically elected leadership and bargaining committee — despite the fact that the BCMEA knows full well we received a 96 per cent mandate to take job action if needed,” union president Frank Morena said in a statement.
The employers have responded by calling the complaint “another meritless claim,” adding the final offer to the union that includes a 19.2 per cent wage increase over a four-year term remains on the table.
“The final offer has been on the table for over a week and represents a fair and balanced proposal for employees, and if accepted would end this dispute,” the employers’ statement says. “The offer does not require any concessions from the union.”
The union says the offer does not address the key issue of staffing requirement at the terminals as the port introduces more automation to cargo loading and unloading, which could potentially require fewer workers to operate than older systems.
The Port of Vancouver is the largest in Canada and has seen a number of labour disruptions, including two instances involving the rail and grain storage sectors earlier this year.
A 13-day strike by another group of workers at the port last year resulted in the disruption of a significant amount of shipping and trade.
This report by The Canadian Press was first published Nov. 9, 2024.
The Royal Canadian Legion says a new partnership with e-commerce giant Amazon is helping boost its veterans’ fund, and will hopefully expand its donor base in the digital world.
Since the Oct. 25 launch of its Amazon.ca storefront, the legion says it has received nearly 10,000 orders for poppies.
Online shoppers can order lapel poppies on Amazon in exchange for donations or buy items such as “We Remember” lawn signs, Remembrance Day pins and other accessories, with all proceeds going to the legion’s Poppy Trust Fund for Canadian veterans and their families.
Nujma Bond, the legion’s national spokesperson, said the organization sees this move as keeping up with modern purchasing habits.
“As the world around us evolves we have been looking at different ways to distribute poppies and to make it easier for people to access them,” she said in an interview.
“This is definitely a way to reach a wider number of Canadians of all ages. And certainly younger Canadians are much more active on the web, on social media in general, so we’re also engaging in that way.”
Al Plume, a member of a legion branch in Trenton, Ont., said the online store can also help with outreach to veterans who are far from home.
“For veterans that are overseas and are away, (or) can’t get to a store they can order them online, it’s Amazon.” Plume said.
Plume spent 35 years in the military with the Royal Engineers, and retired eight years ago. He said making sure veterans are looked after is his passion.
“I’ve seen the struggles that our veterans have had with Veterans Affairs … and that’s why I got involved, with making sure that the people get to them and help the veterans with their paperwork.”
But the message about the Amazon storefront didn’t appear to reach all of the legion’s locations, with volunteers at Branch 179 on Vancouver’s Commercial Drive saying they hadn’t heard about the online push.
Holly Paddon, the branch’s poppy campaign co-ordinator and bartender, said the Amazon partnership never came up in meetings with other legion volunteers and officials.
“I work at the legion, I work with the Vancouver poppy office and I go to the meetings for the Vancouver poppy campaign — which includes all the legions in Vancouver — and not once has this been mentioned,” she said.
Paddon said the initiative is a great idea, but she would like to have known more about it.
The legion also sells a larger collection of items at poppystore.ca.
This report by The Canadian Press was first published Nov. 9, 2024.
