How does Omicron spread so fast? Virus may now be multiplying 70 times quicker in airways - CBC News | Canada News Media
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How does Omicron spread so fast? Virus may now be multiplying 70 times quicker in airways – CBC News

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New research from a team in Hong Kong offers a clue to why the Omicron coronavirus variant is spreading so astonishingly fast around the world: it may be multiplying 70 times quicker than earlier strains within our lower airways.

The laboratory-based study, led by researchers from the LKS Faculty of Medicine at the University of Hong Kong, was shared online as a press release on Wednesday and is currently undergoing peer review for publication.

The researchers found that, just 24 hours after infection, Omicron multiplies 70 times faster than either the Delta variant or the original SARS-CoV-2 virus within tissue samples of human bronchi — the two large tubes that carry air from your windpipe to your lungs.

It’s a finding that could explain why Omicron seems to transmit faster between humans than previous variants, and offers a striking contrast to how the variant replicated in the research team’s samples of actual lung tissue compared to the bronchi. Within those lung samples, the variant multiplied at a rate more than 10 times slower than the original virus.

It’s the lungs — not the bronchi — that are linked to potentially life-threatening COVID-19 complications such as pneumonia and, in severe cases, acute respiratory distress syndrome or ARDS. So if these findings hold up in a real-world setting, the team suspects that slower replication in the lungs might mean reduced severity of disease.

The finding also echoes early evidence from South Africa suggesting Omicron may be linked to a milder course of illness.

But severity of disease is not only a function of where and how quickly a virus replicates in a certain organ, “it is also a function of our immune response,” said Dr. Dominik Mertz, an infectious diseases specialist with Hamilton’s McMaster University, in an email exchange with CBC News.

People need to be careful in drawing direct conclusions from lab-based studies compared to how infections will actually present in the real world, he wrote.

“The latter must be based on observations in those who have confirmed infections, and we still have to learn more in terms of actual severity in a population like ours which has first and foremost mRNA-vaccine immunity.”

Omicron cases have been identified in more than 70 countries around the world, including Canada, where the variant is expected to take over. (Evan Mitsui/CBC)

Omicron threat likely ‘very significant’

The lead researcher from Hong Kong — Dr. Michael Chan Chi-wai, an associate professor of the university’s school of public health — also acknowledged that disease severity is tied to other factors, like whether someone’s immune system goes haywire in response to a coronavirus infection in what’s known as a “cytokine storm.”

“It is also noted that, by infecting many more people, a very infectious virus may cause more severe disease and death even though the virus itself may be less pathogenic,” he said in a statement. 

“Therefore, taken together with our recent studies showing that the Omicron variant can partially escape immunity from vaccines and past infection, the overall threat from [the] Omicron variant is likely to be very significant.”

Ryan Troyer, a virologist and researcher at Western University in London, Ont., stressed that the Hong Kong team’s results are still preliminary.

“The differences they’re finding here look fairly significant,” he said. “It’ll be interesting to see if this is backed up by additional studies.”

Electron micrograph of the human bronchus tissues after infection with SARS-CoV-2. Red arrows show viral particles. (Supplied by the LKS Faculty of Medicine at The University of Hong Kong.)

Variety of symptoms, from mild to severe

Troyer also noted that the study adds to the growing pile of evidence that COVID-19 infections may present in a variety of ways, even before the rise of the Omicron variant, with symptoms ranging from severe and life-threatening to far milder and perhaps barely-noticeable.

Take the ongoing testing of professional sports teams like the NBA and NHL, for instance. Troyer said those tests often pick up infections among the young, healthy players that the athletes themselves didn’t even notice — since vaccination status, the age of those infected, and other factors all play a role in disease severity. 

A Tuesday presentation from Discovery Health, South Africa’s largest private health insurance administrator, offered an analysis of an Omicron outbreak using more than 200,000 COVID-19 test results.

The team noted that for patients with Omicron who needed acute care outside of a hospital setting, the incubation period is typically only three to four days, with patients recovering a few days after that — a tighter timeframe than the previous estimated incubation period ranging from one to 14 days.

WATCH | How boosters protect against Omicron:

How boosters protect against Omicron

17 hours ago

Duration 1:35

Dr. Joss Reimer explains how boosters will help fight against Omicron and answers other questions about immunity. 1:35

“The most common early symptom seems to be a scratchy or sore throat,” said Dr. Ryan Noach, CEO of Discovery Health, during the presentation.

Nasal congestion and dry cough are also commonly reported, he continued, along with muscle aches or pain manifesting in different areas. “Particularly in lower back pain, which seems to be a hallmark in the out-of-hospital presentation,” he said.

Such run-of-the-mill symptoms are easy to disregard, but experts say that’s one of the many ways a more-transmissible variant might be spreading — both quickly and quietly.

“I think it’s important for people to think about the fact that you can’t assume that lack of symptoms means lack of virus,” Troyer said.

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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.

___

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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