More COVID-19 booster shots may be on the way — but when it’s your turn, you’ll get an extra dose of the original vaccine, not one updated to better match the extra-contagious delta variant.
And that has some experts wondering if the booster campaign is a bit of a missed opportunity to target delta and its likely descendants.
“Don’t we want to match the new strains that are most likely to circulate as closely as possible?” Dr. Cody Meissner of Tufts Medical Center, an adviser to the Food and Drug Administration, challenged Pfizer scientists recently.
“I don’t quite understand why this is not delta because that’s what we’re facing right now,” fellow adviser Dr. Patrick Moore of the University of Pittsburgh said last week as government experts debated whether it’s time for Moderna boosters. He wondered if such a switch would be particularly useful to block mild infection.
The simple answer: The FDA last month OK’d extra doses of Pfizer’s original recipe after studies showed it still works well enough against delta — and those doses could be rolled out right away. Now the FDA is weighing evidence for boosters of the original Moderna and Johnson & Johnson vaccines.
“It’s less churn and burn on the manufacturing” to only switch formulas when it’s really necessary, said FDA vaccine chief Dr. Peter Marks.
But Pfizer and Moderna are hedging their bets. They’re already testing experimental doses customized to delta and another variant, learning how to rapidly tweak the formula in case a change eventually is needed — for today’s mutants or a brand new one. The tougher question for regulators is how they’d decide if and when to ever order such a switch.
What we know so far:
CURRENT VACCINES ARE WORKING EVEN AGAINST DELTA
Vaccines used in the U.S. remain strongly effective against hospitalization and death from COVID-19, even after the delta variant took over, but authorities hope to shore up waning protection against less severe infection and for high-risk populations. Studies show an extra dose of the original formulas revs up virus-fighting antibodies that fend off infection, including antibodies that target delta.
MIGHT A DELTA-SPECIFIC BOOSTER WORK EVEN BETTER?
Vaccines target the spike protein that coats the coronavirus. Mutations in that protein made delta more contagious but to the immune system, it doesn’t look all that different, said virus expert Richard Webby of St. Jude Children’s Research Hospital.
That means there’s no guarantee a delta-specific booster would protect any better, said University of Pennsylvania immunologist John Wherry. Waiting for studies to settle that question — and if necessary, brewing updated doses — would have delayed rolling out boosters to people deemed to need them now.
Still, because delta is now the dominant version of the virus worldwide it almost certainly will be a common ancestor for whatever evolves next in a mostly unvaccinated world, said Trevor Bedford, a biologist and genetics expert at the Fred Hutchinson Cancer Research Center.
A delta-updated vaccine would “help to provide a buffer against those additional mutations,” he said. Bedford is paid by the Howard Hughes Medical Institute, which also supports The Associated Press Health and Science Department.
TWEAKING THE RECIPE
The Pfizer and Moderna vaccines are made with a piece of genetic code called messenger RNA that tells the body to make harmless copies of the spike protein so it’s trained to recognize the virus. Updating the formula merely requires swapping out the original genetic code with mRNA for a mutated spike protein.
Both companies first experimented with tweaked doses against a mutant that emerged in South Africa, the beta variant, that has been the most vaccine-resistant to date, more so than the delta variant. Lab tests showed the updated shots produced potent antibodies. But the beta variant didn’t spread widely.
Now the companies have studies underway of fully vaccinated people who agreed to test a booster dose tweaked to match delta. Moderna’s studies also include some shots that combine protection against more than one version of the coronavirus — much like today’s flu vaccines work against multiple influenza strains.
The mRNA vaccines are considered the easiest kind to tweak but some other vaccine makers also are exploring how to change their recipes if necessary.
WHY STUDY UPDATED SHOTS IF THEY’RE NOT YET NEEDED?
Moderna’s Dr. Jacqueline Miller told an FDA advisory panel last week the company is studying variant-specific boosters now to learn if they offer advantages, and to be ready if they’re needed.
And Penn’s Wherry said it is critical to carefully analyze how the body reacts to updated shots because the immune system tends to “imprint” a stronger memory of the first virus strain it encounters. That raises questions about whether a subtly different booster would prompt a temporary jump in antibodies the body’s made before — or the bigger goal, a broader and more durable response that might even be better positioned for the next mutations to come along.
NO RULES YET FOR MAKING A SWITCH
“What is the tripping point?” asked Webby, who is part of a World Health Organization network that tracks influenza evolution. “A lot of what is going to need to go into that decision making is just going to be learned by experience, unfortunately.”
Bedford said now is the time to decide what drop in vaccine effectiveness would trigger a formula change, just as is done with flu vaccines every year.
That’s important not just if a dramatically worse variant suddenly develops. Like many scientists, Bedford expects the coronavirus to eventually evolve from a global crisis into a regular threat every winter — which might mean more regular boosters, maybe even yearly in combination with the flu shot.
Timing between shots matters, too, Wherry noted.
“Your boostability may actually improve with longer intervals between stimulation,” he said. While scientists have learned a lot about the coronavirus, “the story’s not finished yet and we don’t know what the last chapters say.”
MONTREAL – Travel company Transat AT Inc. reported a loss in its latest quarter compared with a profit a year earlier as its revenue edged lower.
The parent company of Air Transat says it lost $39.9 million or $1.03 per diluted share in its quarter ended July 31.
The result compared with a profit of $57.3 million or $1.49 per diluted share a year earlier.
Revenue in what was the company’s third quarter totalled $736.2 million, down from $746.3 million in the same quarter last year.
On an adjusted basis, Transat says it lost $1.10 per share in its latest quarter compared with an adjusted profit of $1.10 per share a year earlier.
Transat chief executive Annick Guérard says demand for leisure travel remains healthy, as evidenced by higher traffic, but consumers are increasingly price conscious given the current economic uncertainty.
This report by The Canadian Press was first published Sept. 12, 2024.
Dollarama Inc.’s food aisles may have expanded far beyond sweet treats or piles of gum by the checkout counter in recent years, but its chief executive maintains his company is “not in the grocery business,” even if it’s keeping an eye on the sector.
“It’s just one small part of our store,” Neil Rossy told analysts on a Wednesday call, where he was questioned about the company’s food merchandise and rivals playing in the same space.
“We will keep an eye on all retailers — like all retailers keep an eye on us — to make sure that we’re competitive and we understand what’s out there.”
Over the last decade and as consumers have more recently sought deals, Dollarama’s food merchandise has expanded to include bread and pantry staples like cereal, rice and pasta sold at prices on par or below supermarkets.
However, the competition in the discount segment of the market Dollarama operates in intensified recently when the country’s biggest grocery chain began piloting a new ultra-discount store.
The No Name stores being tested by Loblaw Cos. Ltd. in Windsor, St. Catharines and Brockville, Ont., are billed as 20 per cent cheaper than discount retail competitors including No Frills. The grocery giant is able to offer such cost savings by relying on a smaller store footprint, fewer chilled products and a hearty range of No Name merchandise.
Though Rossy brushed off notions that his company is a supermarket challenger, grocers aren’t off his radar.
“All retailers in Canada are realistic about the fact that everyone is everyone’s competition on any given item or category,” he said.
Rossy declined to reveal how much of the chain’s sales would overlap with Loblaw or the food category, arguing the vast variety of items Dollarama sells is its strength rather than its grocery products alone.
“What makes Dollarama Dollarama is a very wide assortment of different departments that somewhat represent the old five-and-dime local convenience store,” he said.
The breadth of Dollarama’s offerings helped carry the company to a second-quarter profit of $285.9 million, up from $245.8 million in the same quarter last year as its sales rose 7.4 per cent.
The retailer said Wednesday the profit amounted to $1.02 per diluted share for the 13-week period ended July 28, up from 86 cents per diluted share a year earlier.
The period the quarter covers includes the start of summer, when Rossy said the weather was “terrible.”
“The weather got slightly better towards the end of the summer and our sales certainly increased, but not enough to make up for the season’s horrible start,” he said.
Sales totalled $1.56 billion for the quarter, up from $1.46 billion in the same quarter last year.
Comparable store sales, a key metric for retailers, increased 4.7 per cent, while the average transaction was down2.2 per cent and traffic was up seven per cent, RBC analyst Irene Nattel pointed out.
She told investors in a note that the numbers reflect “solid demand as cautious consumers focus on core consumables and everyday essentials.”
Analysts have attributed such behaviour to interest rates that have been slow to drop and high prices of key consumer goods, which are weighing on household budgets.
To cope, many Canadians have spent more time seeking deals, trading down to more affordable brands and forgoing small luxuries they would treat themselves to in better economic times.
“When people feel squeezed, they tend to shy away from discretionary, focus on the basics,” Rossy said. “When people are feeling good about their wallet, they tend to be more lax about the basics and more willing to spend on discretionary.”
The current economic situation has drawn in not just the average Canadian looking to save a buck or two, but also wealthier consumers.
“When the entire economy is feeling slightly squeezed, we get more consumers who might not have to or want to shop at a Dollarama generally or who enjoy shopping at a Dollarama but have the luxury of not having to worry about the price in some other store that they happen to be standing in that has those goods,” Rossy said.
“Well, when times are tougher, they’ll consider the extra five minutes to go to the store next door.”
This report by The Canadian Press was first published Sept. 11, 2024.
TORONTO – The U.S. Consumer Financial Protection Bureau has ordered TD Bank Group to pay US$28 million for repeatedly sharing inaccurate, negative information about its customers to consumer reporting companies.
The agency says TD has to pay US$7.76 million in total to tens of thousands of victims of its illegal actions, along with a US$20 million civil penalty.
It says TD shared information that contained systemic errors about credit card and bank deposit accounts to consumer reporting companies, which can include credit reports as well as screening reports for tenants and employees and other background checks.
CFPB director Rohit Chopra says in a statement that TD threatened the consumer reports of customers with fraudulent information then “barely lifted a finger to fix it,” and that regulators will need to “focus major attention” on TD Bank to change its course.
TD says in a statement it self-identified these issues and proactively worked to improve its practices, and that it is committed to delivering on its responsibilities to its customers.
The bank also faces scrutiny in the U.S. over its anti-money laundering program where it expects to pay more than US$3 billion in monetary penalties to resolve.
This report by The Canadian Press was first published Sept. 11, 2024.
