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Why the delta variant is spreading COVID-19 so quickly — and what that means for Canada – CBC.ca

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It’s the word on everyone’s mind right now when it comes to the COVID-19 pandemic: Delta.

The highly contagious variant, which was first discovered in India in late 2020, has spread around the world and now accounts for the majority of cases in Canada and various other countries. 

The recent spread in the United States has led the U.S. Centers for Disease Control and Prevention (CDC) to recommend that Americans wear masks in areas with substantial transmission “regardless of vaccination status.”

So, why is this particular variant spreading so rapidly? And what’s the mechanism at play behind its apparent success at infecting human hosts?

The answers are complicated, and there are still unknowns around how, exactly, the delta variant was able to take hold at such a brisk pace, throwing a wrench in global efforts to wind down the pandemic.

But we are getting closer to understanding how it works — and why vaccines, thankfully, still hold up.

How contagious is delta?

The delta variant is thought to be significantly more contagious than the early strain of SARS-CoV-2, the virus which first swept around the world. Delta has been dubbed a variant of concern by the World Health Organization (WHO).

“We are fighting the same virus but a virus that has become fitter and better adapted to transmitting amongst us humans,” said Dr. Michael Ryan, executive director of the WHO’s health emergencies program, during a Friday briefing.

Scientists estimate it’s spreading roughly 50 per cent faster than the alpha variant, which was 50 per cent more contagious than the original virus strain, according to the Yale School of Public Health.

That means every person infected is capable of passing the virus on to more people than before, helping this variant spread through populations quickly — and even faster among those whose immune systems aren’t already on high alert due to a previous COVID-19 infection or vaccination.

WATCH | COVID-19 delta variant a ‘dangerous virus,’ warns WHO:

The World Health Organization says the trajectory for the COVID-19 delta variant in some countries is almost ‘vertical’ and warns that even partially vaccinated countries are at great risk because of its high transmissibility. (Willy Kurniawan/Reuters) 0:56

Why is it more transmissible?

While the exact mechanism making delta more transmissible isn’t entirely clear, emerging research is hinting at possible reasons why it’s so infectious.

One lab-based study published in the journal Cell Host & Microbe, from researchers at the Kumamoto University and Weizmann Institute of Science, suggests mutations on the spike protein of this SARS-CoV-2 variant can evade cellular immunity and may increase its infectivity. 

The spike protein is a crucial feature on the surface of the coronavirus that allows it to gain access to our cells, explained University of Ottawa epidemiologist Raywat Deonandan. 

“It fits into a receptor on our cells and then it enters the cell via that receptor. Something about the mutation has changed the shape or a feature on the spike protein that makes it fit a bit better,” he said.

“As a result, you need fewer viruses present to achieve infection.”

People wear masks while walking in Grand Central Terminal in New York City on July 27. Due to the rapidly spreading delta variant, the U.S. Centers for Disease Control and Prevention now recommends that fully vaccinated people begin wearing masks indoors again in places with high COVID-19 transmission rates. (Spencer Platt/Getty Images)

Another study from a team in China, which has not yet been peer-reviewed, found people infected with the delta variant carried, on average, a more than 1,000 times higher amount of virus in their nose compared to the original strain — which likely means they’re shedding more of it.

The researchers also found people carrying this variant test positive faster: around four days after exposure, compared to around six for the original strain. That suggests delta replicates at a quicker pace inside someone’s body.

“You may actually excrete more virus and that’s why it’s more transmissible,” microbiologist Sharon Peacock, who runs the U.K.’s efforts to sequence the genomes of coronavirus variants, recently told Reuters.

How well do vaccines protect against it?

If carrying around delta means people may be shedding more of the virus and transmitting it to others more easily, vaccines definitely have a tougher task — since people’s immune systems are now facing a larger army and need to ramp up to mount a defence.

In the U.S., the CDC warned Friday that emerging data from a county in Massachusetts suggests the higher viral loads could mean vaccinated people can still transmit delta to others.

But the good news is that leading vaccines, including those approved for use in Canada, do seem to ward off serious disease that can lead to hospitalization or death.

A recent study in the New England Journal of Medicine found two doses of the Pfizer-BioNTech vaccine were 88 per cent effective against the delta variant, while two shots of the AstraZeneca-Oxford vaccine were 67 per cent effective. 

It marked a drop in the vaccines’ ability to curb infections of any severity level — whether mild or more severe — when compared to the earlier alpha variant, but the researchers said there were only “modest differences.”

Health-care providers administer the Pfizer-BioNTech COVID-19 vaccine at a pop-up clinic in Toronto on July 27. Leading vaccines do seem to ward off serious disease that can lead to hospitalization or death, even against the delta variant. (Evan Mitsui/CBC)

Recent data from Israel also shows the Pfizer shot reduced the risk of severe disease by a whopping 91 per cent, and hospitalization by 88 per cent. The level of protection against symptomatic infections in general was less than half that, but there are questions about how the government collected its data and how many infections were involved.

Still, it’s a hopeful real-world snapshot of how a leading mRNA vaccine is warding off serious illness, and it is likely the highly similar Moderna shot also being used in Canada would fare similarly.

“I don’t want to minimize the risk of things like ‘long COVID,’ but one of the biggest risks is how likely you’ll develop serious disease after being infected,” stressed Angela Rasmussen, a virologist with the University of Saskatchewan’s Vaccine and Infectious Disease Organization.

“The bottom line there,” she said, “is vaccination is still very protective.”

How widespread is delta?

This variant has definitely taken hold around the world since being first reported in October 2020 in India, with other countries later reporting high levels as well.

“It’s out-competing all other viruses, because it just spreads so much more efficiently,” virologist Shane Crotty, of the La Jolla Institute for Immunology in San Diego, told Reuters.

In the U.S., delta now represents more than 80 per cent of new infections. Cases are spiking in many areas with low vaccination rates, and data shows unvaccinated individuals total nearly 97 per cent of all severe cases.

Across Africa, meagre vaccination rates, coupled with the rise of the delta variant, are putting major pressure on various countries’ hospital systems.

The variant is now being found in at least 26 African nations, and 21 countries have seen cases rise by more than 20 per cent for at least two weeks running, the WHO announced in late July.



Countries from the U.K. to Singapore are also dealing with delta surges — including Canada. Variants of this virus now make up the bulk of our SARS-CoV-2 infections.

By early July, delta made up roughly 70 per cent of the country’s cases, according to the latest available whole genome sequencing data from the Public Health Agency of Canada.

That marked a massive jump from early May, when delta still represented less than 10 per cent of sequenced infections.

So what does this all mean for Canada?

There are now growing signs that the rise of delta could spark another overall surge in cases — even though nearly six in 10 Canadians are now fully vaccinated, millions still remain unprotected.

Ontario and Quebec have largely plateaued for new daily COVID-19 cases after weeks of falling numbers, while the number of new cases reported each day in B.C. has actually tripled during the last three weeks.

The virus is also spreading faster in Alberta than it did during the peak of the province’s third wave — all while that province is set to loosen its tightest restrictions around mask-wearing and isolation requirements.

WATCH | Alberta removing most COVID-19 isolation, testing requirements:

Alberta will be pulling back on requirements for COVID-19 testing, contact tracing and quarantines, despite rising cases in the province. 2:05

Even if overall case growth starts to spike, some experts are hopeful Canada, as a whole, will avoid the most dire outcomes, including overwhelming pressure on the country’s hospital networks and a death toll similar to earlier waves. 

Most people may still be able to avoid getting infected if they’re both vaccinated and playing it safe, even in high-density, urban areas, Rasmussen said, though she does expect school outbreaks if mitigation measures aren’t in place.

Many Canadians are still wearing masks and taking precautions in social settings, said Deonandan.

“I’m fairly optimistic that if this good decision-making continues, we could be world leaders in this endeavour.”

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What’s the greatest holiday gift: lips, hair, skin? Give the gift of great skin this holiday season

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Give the gift of great skin this holiday season

Skinstitut Holiday Gift Kits take the stress out of gifting

Toronto, October 31, 2024 – Beauty gifts are at the top of holiday wish lists this year, and Laser Clinics Canada, a leader in advanced beauty treatments and skincare, is taking the pressure out of seasonal shopping. Today, Laser Clincs Canada announces the arrival of its 2024 Holiday Gift Kits, courtesy of Skinstitut, the exclusive skincare line of Laser Clinics Group.

In time for the busy shopping season, the limited-edition Holiday Gifts Kits are available in Laser Clinics locations in the GTA and Ottawa. Clinics are conveniently located in popular shopping centers, including Hillcrest Mall, Square One, CF Sherway Gardens, Scarborough Town Centre, Rideau Centre, Union Station and CF Markville. These limited-edition Kits are available on a first come, first served basis.

“These kits combine our best-selling products, bundled to address the most relevant skin concerns we’re seeing among our clients,” says Christina Ho, Senior Brand & LAM Manager at Laser Clinics Canada. “With several price points available, the kits offer excellent value and suit a variety of gift-giving needs, from those new to cosmeceuticals to those looking to level up their skincare routine. What’s more, these kits are priced with a savings of up to 33 per cent so gift givers can save during the holiday season.

There are two kits to select from, each designed to address key skin concerns and each with a unique theme — Brightening Basics and Hydration Heroes.

Brightening Basics is a mix of everyday essentials for glowing skin for all skin types. The bundle comes in a sleek pink, reusable case and includes three full-sized products: 200ml gentle cleanser, 50ml Moisture Defence (normal skin) and 30ml1% Hyaluronic Complex Serum. The Brightening Basics kit is available at $129, a saving of 33 per cent.

Hydration Heroes is a mix of hydration essentials and active heroes that cater to a wide variety of clients. A perfect stocking stuffer, this bundle includes four deluxe products: Moisture 15 15 ml Defence for normal skin, 10 ml 1% Hyaluronic Complex Serum, 10 ml Retinol Serum and 50 ml Expert Squalane Cleansing Oil. The kit retails at $59.

In addition to the 2024 Holiday Gifts Kits, gift givers can easily add a Laser Clinic Canada gift card to the mix. Offering flexibility, recipients can choose from a wide range of treatments offered by Laser Clinics Canada, or they can expand their collection of exclusive Skinstitut products.

 

Brightening Basics 2024 Holiday Gift Kit by Skinstitut, available exclusively at Laser Clincs Canada clinics and online at skinstitut.ca.

Hydration Heroes 2024 Holiday Gift Kit by Skinstitut – available exclusively at Laser Clincs Canada clinics and online at skinstitut.ca.

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Here is how to prepare your online accounts for when you die

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LONDON (AP) — Most people have accumulated a pile of data — selfies, emails, videos and more — on their social media and digital accounts over their lifetimes. What happens to it when we die?

It’s wise to draft a will spelling out who inherits your physical assets after you’re gone, but don’t forget to take care of your digital estate too. Friends and family might treasure files and posts you’ve left behind, but they could get lost in digital purgatory after you pass away unless you take some simple steps.

Here’s how you can prepare your digital life for your survivors:

Apple

The iPhone maker lets you nominate a “ legacy contact ” who can access your Apple account’s data after you die. The company says it’s a secure way to give trusted people access to photos, files and messages. To set it up you’ll need an Apple device with a fairly recent operating system — iPhones and iPads need iOS or iPadOS 15.2 and MacBooks needs macOS Monterey 12.1.

For iPhones, go to settings, tap Sign-in & Security and then Legacy Contact. You can name one or more people, and they don’t need an Apple ID or device.

You’ll have to share an access key with your contact. It can be a digital version sent electronically, or you can print a copy or save it as a screenshot or PDF.

Take note that there are some types of files you won’t be able to pass on — including digital rights-protected music, movies and passwords stored in Apple’s password manager. Legacy contacts can only access a deceased user’s account for three years before Apple deletes the account.

Google

Google takes a different approach with its Inactive Account Manager, which allows you to share your data with someone if it notices that you’ve stopped using your account.

When setting it up, you need to decide how long Google should wait — from three to 18 months — before considering your account inactive. Once that time is up, Google can notify up to 10 people.

You can write a message informing them you’ve stopped using the account, and, optionally, include a link to download your data. You can choose what types of data they can access — including emails, photos, calendar entries and YouTube videos.

There’s also an option to automatically delete your account after three months of inactivity, so your contacts will have to download any data before that deadline.

Facebook and Instagram

Some social media platforms can preserve accounts for people who have died so that friends and family can honor their memories.

When users of Facebook or Instagram die, parent company Meta says it can memorialize the account if it gets a “valid request” from a friend or family member. Requests can be submitted through an online form.

The social media company strongly recommends Facebook users add a legacy contact to look after their memorial accounts. Legacy contacts can do things like respond to new friend requests and update pinned posts, but they can’t read private messages or remove or alter previous posts. You can only choose one person, who also has to have a Facebook account.

You can also ask Facebook or Instagram to delete a deceased user’s account if you’re a close family member or an executor. You’ll need to send in documents like a death certificate.

TikTok

The video-sharing platform says that if a user has died, people can submit a request to memorialize the account through the settings menu. Go to the Report a Problem section, then Account and profile, then Manage account, where you can report a deceased user.

Once an account has been memorialized, it will be labeled “Remembering.” No one will be able to log into the account, which prevents anyone from editing the profile or using the account to post new content or send messages.

X

It’s not possible to nominate a legacy contact on Elon Musk’s social media site. But family members or an authorized person can submit a request to deactivate a deceased user’s account.

Passwords

Besides the major online services, you’ll probably have dozens if not hundreds of other digital accounts that your survivors might need to access. You could just write all your login credentials down in a notebook and put it somewhere safe. But making a physical copy presents its own vulnerabilities. What if you lose track of it? What if someone finds it?

Instead, consider a password manager that has an emergency access feature. Password managers are digital vaults that you can use to store all your credentials. Some, like Keeper,Bitwarden and NordPass, allow users to nominate one or more trusted contacts who can access their keys in case of an emergency such as a death.

But there are a few catches: Those contacts also need to use the same password manager and you might have to pay for the service.

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Is there a tech challenge you need help figuring out? Write to us at onetechtip@ap.org with your questions.

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Pediatric group says doctors should regularly screen kids for reading difficulties

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The Canadian Paediatric Society says doctors should regularly screen children for reading difficulties and dyslexia, calling low literacy a “serious public health concern” that can increase the risk of other problems including anxiety, low self-esteem and behavioural issues, with lifelong consequences.

New guidance issued Wednesday says family doctors, nurses, pediatricians and other medical professionals who care for school-aged kids are in a unique position to help struggling readers access educational and specialty supports, noting that identifying problems early couldhelp kids sooner — when it’s more effective — as well as reveal other possible learning or developmental issues.

The 10 recommendations include regular screening for kids aged four to seven, especially if they belong to groups at higher risk of low literacy, including newcomers to Canada, racialized Canadians and Indigenous Peoples. The society says this can be done in a two-to-three-minute office-based assessment.

Other tips encourage doctors to look for conditions often seen among poor readers such as attention-deficit hyperactivity disorder; to advocate for early literacy training for pediatric and family medicine residents; to liaise with schools on behalf of families seeking help; and to push provincial and territorial education ministries to integrate evidence-based phonics instruction into curriculums, starting in kindergarten.

Dr. Scott McLeod, one of the authors and chair of the society’s mental health and developmental disabilities committee, said a key goal is to catch kids who may be falling through the cracks and to better connect families to resources, including quicker targeted help from schools.

“Collaboration in this area is so key because we need to move away from the silos of: everything educational must exist within the educational portfolio,” McLeod said in an interview from Calgary, where he is a developmental pediatrician at Alberta Children’s Hospital.

“Reading, yes, it’s education, but it’s also health because we know that literacy impacts health. So I think that a statement like this opens the window to say: Yes, parents can come to their health-care provider to get advice, get recommendations, hopefully start a collaboration with school teachers.”

McLeod noted that pediatricians already look for signs of low literacy in young children by way of a commonly used tool known as the Rourke Baby Record, which offers a checklist of key topics, such as nutrition and developmental benchmarks, to cover in a well-child appointment.

But he said questions about reading could be “a standing item” in checkups and he hoped the society’s statement to medical professionals who care for children “enhances their confidence in being a strong advocate for the child” while spurring partnerships with others involved in a child’s life such as teachers and psychologists.

The guidance said pediatricians also play a key role in detecting and monitoring conditions that often coexist with difficulty reading such as attention-deficit hyperactivity disorder, but McLeod noted that getting such specific diagnoses typically involves a referral to a specialist, during which time a child continues to struggle.

He also acknowledged that some schools can be slow to act without a specific diagnosis from a specialist, and even then a child may end up on a wait list for school interventions.

“Evidence-based reading instruction shouldn’t have to wait for some of that access to specialized assessments to occur,” he said.

“My hope is that (by) having an existing statement or document written by the Canadian Paediatric Society … we’re able to skip a few steps or have some of the early interventions present,” he said.

McLeod added that obtaining specific assessments from medical specialists is “definitely beneficial and advantageous” to know where a child is at, “but having that sort of clear, thorough assessment shouldn’t be a barrier to intervention starting.”

McLeod said the society was partly spurred to act by 2022’s “Right to Read Inquiry Report” from the Ontario Human Rights Commission, which made 157 recommendations to address inequities related to reading instruction in that province.

He called the new guidelines “a big reminder” to pediatric providers, family doctors, school teachers and psychologists of the importance of literacy.

“Early identification of reading difficulty can truly change the trajectory of a child’s life.”

This report by The Canadian Press was first published Oct. 23, 2024.

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