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U.S. health officials recommending all Americans get COVID-19 booster shots – CBC.ca

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U.S. health officials are now planning for all Americans to receive COVID-19 booster shots to shore up their protection while the delta variant is spreading — but not all outside experts agree there’s concrete evidence suggesting that the vaccines’ effectiveness is falling enough to warrant this approach while much of the world waits for vaccines.

The new U.S. plan, as outlined by the director of the Centers for Disease Control and Prevention (CDC) and other top authorities, calls for an extra dose eight months after people get their second shot of the Pfizer or Moderna vaccine.

The doses could begin the week of Sept. 20.

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“Our plan is to protect the American people, to stay ahead of this virus,” CDC director Dr. Rochelle Walensky said in a statement.

In their statement, U.S. officials also said it is “very clear” that the vaccines’ protection against infection wanes over time, and now, with the highly contagious delta variant spreading rapidly, there is emerging evidence of reduced protection against mild and moderate disease.

“Based on our latest assessment, the current protection against severe disease, hospitalization and death could diminish in the months ahead,” they said.

Dr. Mark Mulligan of NYU’s Langone Health centre welcomed the announcement as a “proactive” response to signs that vaccine strength is eroding.

“There are hints that this may become an increasing problem given waning immunity mixed with the delta variant,” he said. “Part of leadership is being able to see around the corner and make hard decisions without having all the data. It seems to me that’s what they’re doing here.”

The U.S. is not alone in its new approach. Israel is already offering booster shots to people over 50 to control its delta surge, and European medical regulators said they are talking with vaccine developers about the idea.

While Canada’s national vaccine advisory committee has not made a formal recommendation on boosters yet, Ontario said Tuesday it will soon roll out additional shots for certain vulnerable segments of the population.

(CBC News)

WHO, outside experts question plan

But top scientists at the World Health Organization (WHO) bitterly objected to the U.S. plan, noting that many countries are not getting enough doses for their initial rounds of shots.

“We’re planning to hand out extra life jackets to people who already have life jackets, while we’re leaving other people to drown without a single life jacket,” said Dr. Michael Ryan, the WHO’s emergencies chief.

And in contrast to U.S. officials, the organization’s top scientist, Dr. Soumya Swaminathan, said that the data does not indicate that boosters are needed for everyone.

She also warned that leaving billions of people in the developing world unvaccinated could foster the emergence of new variants and result in “even more dire situations.”

WATCH | WHO calls for temporary moratorium on COVID-19 vaccine booster doses:

WHO calls for temporary moratorium on COVID-19 vaccine booster doses

14 days ago

The World Health Organization is urging wealthy countries to stop administering COVID-19 vaccine booster doses until the end of September to allow those shots to be diverted to countries that don’t have enough vaccines. (Credit: Reuters/Zohra Bensemra) 0:59

In making the announcement on boosters, the CDC released three studies conducted during the delta surge that suggest that the COVID-19 vaccines remain highly effective at keeping Americans out of the hospital but that their ability to prevent infection is dropping markedly among nursing home patients and others.

However, the new studies — on their own — fall short of the kind of data that some experts thought would be necessary for a recommendation like that.

Some scientists have been looking for signs that hospitalizations or deaths are increasing, as a necessary indicator that boosters might be needed. The new studies, on the contrary, found no change in vaccine effectiveness against hospitalizations.

The studies “would not be sufficient, in and of themselves, to make the case for a booster” to some leading scientists, said Dr. William Schaffner, an infectious-diseases expert at Vanderbilt University.

3 studies shared by CDC

Just last week, U.S. health officials recommended boosters for only some people with weakened immune systems, such as cancer patients and organ transplant recipients. Offering boosters to all Americans would be a major expansion of what is already the biggest vaccination campaign in U.S. history.

Schaffner, who is a liaison to an expert advisory panel that helps the CDC form its vaccination recommendations, said members of the committee were surprised when Biden administration officials this week disclosed plans to call for a booster for the general public.

Of the three studies released by CDC on Wednesday, the one that spoke most directly to a possible need for boosters was a look at reported infections in residents of nearly 15,000 nursing homes and other long-term care facilities.

It found that the effectiveness of the Pfizer and Moderna vaccines against COVID-19 infection dropped, from about 74 per cent in March, April and early May to 53 per cent in June and July.

WATCH | Canadian and American health officials suggest third doses for most vulnerable:

Canadian and American health officials suggest third doses for most vulnerable

5 days ago

As a fourth wave of COVID-19 nears, U.S. regulators are suggesting third vaccine shots for the immunocompromised, and Ontario is eyeing a plan for booster shots. 2:03

The researchers said it was not clear how much of the decline is attributable to the delta variant and how much might be due to a more general weakening of immunity that could have occurred against any strain.

The study looked at all COVID-19 infections, with or without symptoms. The researchers said more work is needed to determine if there was a higher incidence of infections that resulted in severe illness.

Another one of the studies looked at hospitalizations at 21 hospitals. It found that vaccine effectiveness against COVID-19-associated hospitalization in inoculated people was 86 per cent at two to 12 weeks after second dose, and 85 per cent at 13 to 24 weeks after.

The third study found that protection against hospitalizations stayed steady at about 95 per cent over the nearly three months studied. But vaccine effectiveness against new laboratory-confirmed infections for all adults in New York state declined from about 92 per cent in early May to about 80 per cent in late July.

The researchers said they are not certain why the decline occurred, but they noted it coincided with the delta variant as well as an easing of physical distancing and mask rules.

U.S. struggling to control outbreaks

The call for booster shots is a stark reminder that nearly 20 months into the outbreak, the U.S. is still unable to contain the virus that has killed 620,000 Americans and disrupted nearly every part of daily life. 

Just weeks after President Joe Biden declared the country’s “independence” from COVID-19 on July Fourth, emergency rooms in parts of the southern and western states are overloaded again, and cases are now averaging nearly 140,000 per day, quadrupling in just a month.

Health officials said people who received the single-dose Johnson & Johnson vaccine will also probably need extra shots. But they said they are waiting for more data.

The overall plan is subject to a Food and Drug Administration evaluation of the safety and effectiveness of a third dose, U.S. officials said.

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Cancer Awareness Month – Métis Nation of Alberta

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Cancer Awareness Month

Posted on: Apr 18, 2024

April is Cancer Awareness Month

As we recognize Cancer Awareness Month, we stand together to raise awareness, support those affected, advocate for prevention, early detection, and continued research towards a cure. Cancer is the leading cause of death for Métis women and the second leading cause of death for Métis men. The Otipemisiwak Métis Government of the Métis Nation Within Alberta is working hard to ensure that available supports for Métis Citizens battling cancer are culturally appropriate, comprehensive, and accessible by Métis Albertans at all stages of their cancer journey.

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Receiving a cancer diagnosis, whether for yourself or a loved one, can feel overwhelming, leaving you unsure of where to turn for support. In June, our government will be launching the Cancer Supports and Navigation Program which will further support Métis Albertans and their families experiencing cancer by connecting them to OMG-specific cancer resources, external resources, and providing navigation support through the health care system. This program will also include Métis-specific peer support groups for those affected by cancer.

With funding from the Canadian Partnership Against Cancer (CPAC) we have also developed the Métis Cancer Care Course to ensure that Métis Albertans have access to culturally safe and appropriate cancer services. This course is available to cancer care professionals across the country and provides an overview of who Métis people are, our culture, our approaches to health and wellbeing, our experiences with cancer care, and our cancer journey.

Together, we can make a difference in the fight against cancer and ensure equitable access to culturally safe and appropriate care for all Métis Albertans. Please click on the links below to learn more about the supports available for Métis Albertans, including our Compassionate Care: Cancer Transportation program.

I wish you all good health and happiness!

Bobbi Paul-Alook
Secretary of Health & Seniors

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Type 2 diabetes is not one-size-fits-all: Subtypes affect complications and treatment options – The Conversation

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You may have heard of Ozempic, the “miracle drug” for weight loss, but did you know that it was actually designed as a new treatment to manage diabetes? In Canada, diabetes affects approximately 10 per cent of the general population. Of those cases, 90 per cent have Type 2 diabetes.

This metabolic disorder is characterized by persistent high blood sugar levels, which can be accompanied by secondary health challenges, including a higher risk of stroke and kidney disease.

Locks and keys

In Type 2 diabetes, the body struggles to maintain blood sugar levels in an acceptable range. Every cell in the body needs sugar as an energy source, but too much sugar can be toxic to cells. This equilibrium needs to be tightly controlled and is regulated by a lock and key system.

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In the body’s attempt to manage blood sugar levels and ensure that cells receive the right amount of energy, the pancreatic hormone, insulin, functions like a key. Cells cover themselves with locks that respond perfectly to insulin keys to facilitate the entry of sugar into cells.

Unfortunately, this lock and key system doesn’t always perform as expected. The body can encounter difficulties producing an adequate number of insulin keys, and/or the locks can become stubborn and unresponsive to insulin.

All forms of diabetes share the challenge of high blood sugar levels; however, diabetes is not a singular condition; it exists as a spectrum. Although diabetes is broadly categorized into two main types, Type 1 and Type 2, each presents a diversity of subtypes, especially Type 2 diabetes.

These subtypes carry their own characteristics and risks, and do not respond uniformly to the same treatments.

To better serve people living with Type 2 diabetes, and to move away from a “one size fits all” approach, it is beneficial to understand which subtype of Type 2 diabetes a person lives with. When someone needs a blood transfusion, the medical team needs to know the patient’s blood type. It should be the same for diabetes so a tailored and effective game plan can be implemented.

This article explores four unique subtypes of Type 2 diabetes, shedding light on their causes, complications and some of their specific treatment avenues.

Severe insulin-deficient diabetes: We’re missing keys!

In severe insulin-deficient diabetes, beta cells limit production of the keys that unlock cells to allow entry of sugar from the blood.
(Lili Grieco-St-Pierre, Jennifer Bruin/Created with BioRender.com)

Insulin is produced by beta cells, which are found in the pancreas. In the severe insulin-deficient diabetes (SIDD) subtype, the key factories — the beta cells — are on strike. Ultimately, there are fewer keys in the body to unlock the cells and allow entry of sugar from the blood.

SIDD primarily affects younger, leaner individuals, and unfortunately, increases the risk of eye disease and blindness, among other complications. Why the beta cells go on strike remains largely unknown, but since there is an insulin deficiency, treatment often involves insulin injections.

Severe insulin-resistant diabetes: But it’s always locked!

A diagram of three closed locks and lots of keys

In severe insulin-resistant diabetes, the locks start ignoring the keys, triggering the beta cells to produce even more keys to compensate.
(Lili Grieco-St-Pierre, Jennifer Bruin/Created with BioRender.com)

In the severe insulin-resistant diabetes (SIRD) subtype, the locks are overstimulated and start ignoring the keys. As a result, the beta cells produce even more keys to compensate. This can be measured as high levels of insulin in the blood, also known as hyperinsulinemia.

This resistance to insulin is particularly prominent in individuals with higher body weight. Patients with SIRD have an increased risk of complications such as fatty liver disease. There are many treatment avenues for these patients but no consensus about the optimal approach; patients often require high doses of insulin.

Mild obesity-related diabetes: The locks are sticky!

Illustration of a lock and key

In mild obesity-related diabetes, the locks are ‘sticky,’ making it difficult for the keys to open the locks.
(Lili Grieco-St-Pierre, Jennifer Bruin/Created with BioRender.com)

Mild obesity-related (MOD) diabetes represents a nuanced aspect of Type 2 diabetes, often observed in individuals with higher body weight. Unlike more severe subtypes, MOD is characterized by a more measured response to insulin. The locks are “sticky,” so it is challenging for the key to click in place and open the lock. While MOD is connected to body weight, the comparatively less severe nature of MOD distinguishes it from other diabetes subtypes.

To minimize complications, treatment should include maintaining a healthy diet, managing body weight, and incorporating as much aerobic exercise as possible. This is where drugs like Ozempic can be prescribed to control the evolution of the disease, in part by managing body weight.

Mild age-related diabetes: I’m tired of controlling blood sugar!

Illustration of a lock and a beta cell

In people with mild age-related diabetes, both the locks and the beta cells that produce keys are tired, resulting in fewer keys and stubborn locks.
(Lili Grieco-St-Pierre, Jennifer Bruin/Created with BioRender.com)

Mild age-related diabetes (MARD) happens more often in older people and typically starts later in life. With time, the key factory is not as productive, and the locks become stubborn. People with MARD find it tricky to manage their blood sugar, but it usually doesn’t lead to severe complications.

Among the different subtypes of diabetes, MARD is the most common.

Unique locks, varied keys

While efforts have been made to classify diabetes subtypes, new subtypes are still being identified, making proper clinical assessment and treatment plans challenging.

In Canada, unique cases of Type 2 diabetes were identified in Indigenous children from Northern Manitoba and Northwestern Ontario by Dr. Heather Dean and colleagues in the 1980s and 90s. Despite initial skepticism from the scientific community, which typically associated Type 2 diabetes with adults rather than children, clinical teams persisted in identifying this as a distinct subtype of Type 2 diabetes, called childhood-onset Type 2 diabetes.




Read more:
Indigenous community research partnerships can help address health inequities


Childhood-onset Type 2 diabetes is on the rise across Canada, but disproportionately affects Indigenous youth. It is undoubtedly linked to the intergenerational trauma associated with colonization in these communities. While many factors are likely involved, recent studies have discovered that exposure of a fetus to Type 2 diabetes during pregnancy increases the risk that the baby will develop diabetes later in life.

Acknowledging this distinct subtype of Type 2 diabetes in First Nations communities has led to the implementation of a community-based health action plan aimed at addressing the unique challenges faced by Indigenous Peoples. It is hoped that partnered research between communities and researchers will continue to help us understand childhood-onset Type 2 diabetes and how to effectively prevent and treat it.

A mosaic of conditions

Illustration of different subtypes of Type 2 diabetes

Type 2 diabetes is a mosaic of conditions, each with its own characteristics.
(Lili Grieco-St-Pierre, Jennifer Bruin/Created with BioRender.com)

Type 2 diabetes is not uniform; it’s a mosaic of conditions, each with its own characteristics. Since diabetes presents so uniquely in every patient, even categorizing into subtypes does not guarantee how the disease will evolve. However, understanding these subtypes is a good starting point to help doctors create personalized plans for people living with the condition.

While Indigenous communities, lower-income households and individuals living with obesity already face a higher risk of developing Type 2 diabetes than the general population, tailored solutions may offer hope for better management. This emphasizes the urgent need for more precise assessments of diabetes subtypes to help customize therapeutic strategies and management strategies. This will improve care for all patients, including those from vulnerable and understudied populations.

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Quebec successfully pushes back against rise in measles cases – CBC.ca

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Quebec appears to be winning its battle against the rising tide of measles after 45 cases were confirmed province-wide this year.

“We’ve had no locally transmitted measles cases since March 25, so that’s good news,” said Dr. Paul Le Guerrier, responsible for immunization for Montreal Public Health.

There are 17 patients with measles in Quebec currently, and the most recent case is somebody who was infected while abroad, he said.

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But it was no small task to get to this point. 

Le Guerrier said once local transmission was detected, news was spread fast among health centres to ensure proper protocols were followed — such as not letting potentially infected people sit in waiting rooms for hours on end.

Then about 90 staffers were put to work, tracking down those who were in contact with positive cases and are not properly vaccinated. They were given post-exposure prophylaxis, which prevents disease, said Le Guerrier.

From there, a vaccination campaign was launched, especially in daycares, schools and neighbourhoods with low inoculation rates. There was an effort to convince parents to get their children vaccinated.

Vaccination in schools boosted

Some schools, mostly in Montreal, had vaccination rates as low as 30 or 40 per cent.

“Vaccination was well accepted and parents responded well,” said Le Guerrier. “Some schools went from very low to as high as 85 to 90 per cent vaccination coverage.”

But it’s not only children who aren’t properly vaccinated. Le Guerrier said people need two doses after age one to be fully inoculated, and he encouraged people to check their status.

There are all kinds of reasons why people aren’t vaccinated, but it’s only about five per cent who are against immunization, he said. So far, some 10,000 people have been vaccinated against measles province-wide during this campaign, Le Guerrier said. 

The next step is to continue pushing for further vaccination, but he said, small outbreaks are likely in the future as measles is spreading abroad and travellers are likely to bring it back with them.

Need to improve vaccination rate, expert says

Dr. Donald Vinh, an infectious diseases specialist from the McGill University Health Centre, said it’s not time to rest on our laurels, but this is a good indication that public health is able to take action quickly and that people are willing to listen to health recommendations.

“We are not seeing new cases or at least the new cases are not exceeding the number of cases that we can handle,” said Vinh.

“So these are all reassuring signs, but I don’t think it’s a sign that we need to become complacent.”

Vinh said there are also signs that the public is lagging in vaccine coverage and it’s important to respond to this with improved education and access. Otherwise, microbes capitalize on our weaknesses, he said. 

Getting vaccination coverage up to an adequate level is necessary, Vinh said, or more small outbreaks like this will continue to happen.

“And it’s very possible that we may not be able to get one under control if we don’t react quickly enough,” he said.

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