Latest / Morning Medical with Dr. Chow / Quebec's COVID Policy, Retinal Scans for Heart Disease, Measles Alert, and Weight Loss Drugs

Transcript

Quebec's COVID Policy, Retinal Scans for Heart Disease, Measles Alert, and Weight Loss Drugs · Morning Medical with Dr. Chow

• 0:00
  Hello and welcome to another episode of Morning Medical with Dr.
• 0:04
  Chow, where we bring you the latest in medical and health news from around the world.
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  I'm your host, Dr.
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  Chi-Ming Chow.
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  Today, we're diving into a significant update from Quebec regarding COVID-19 vaccinations.
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  The province of Quebec has announced a major change in its COVID-19 vaccination policy.
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  Starting this fall, COVID-19 vaccines will no longer be free for the general population.
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  This decision comes as federal funding for these vaccines has ended, transferring the
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  responsibility of purchasing and immunization scheduling to the provinces and territories.
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  Dr.
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  Luc Boileau, Quebec's public health director, made the announcement on the Radio-Canada show,
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  Midi info.
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  He clarified that while the vaccine will not be free for everyone, it will remain free for
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  people considered at risk.
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  This group includes individuals aged 65 and older, those who are immunocompromised or have
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  chronic illnesses, residents of long-term care facilities, private seniors' residences, and
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  other vulnerable settings.
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  Health-care workers, adults in remote regions, and pregnant people are also eligible for the
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  free vaccine.
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  For those outside these at-risk categories, a dose of the vaccine will cost between $150 and
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  $180 at a pharmacy.
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  The Quebec immunization committee has recommended prioritizing vaccination for those
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  75 and older, a decision they believe is the most cost-effective approach.
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  A vaccination campaign is planned for early October targeting vulnerable groups first, with
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  remaining doses available for others afterward.
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  Dr.
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  Boileau also mentioned that most Quebecers have had COVID-19 at least once and have been
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  vaccinated, suggesting that many have acquired some level of immunity that helps prevent
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  serious illness.
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  Therefore, for those not considered at risk, he noted that there isn't a significant benefit to
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  getting vaccinated, although public health is not opposed to it for the general population.
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  The decision was made in consultation with public health experts, emphasizing that
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  prevention remains crucial for both citizens and the health-care system.
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  Dr.
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  Boileau highlighted that vaccination against COVID-19 and the flu isn't necessarily
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  recommended for people not in at-risk groups.
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  Instead, he suggests that these individuals can protect their vulnerable loved ones by avoiding
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  contact when they're sick.
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  This shift in policy reflects a broader trend as COVID-19 cases begin to climb again across
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  parts of Canada.
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  While vaccination remains a key preventive measure for those at risk, it's clear that
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  Quebec is adapting its strategy based on current circumstances and expert
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  recommendations.
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  Today, we're turning our attention to a fascinating piece of research that could have
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  significant implications for heart disease screening.
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  Researchers have been investigating the potential of noninvasive retinal scans to flag
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  silent heart disease, and the results are promising.
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  In a study conducted by Dr.
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  Young Hee Yoon and colleagues at Asan Medical Center and the University of Ulsan College of
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  Medicine in Seoul, South Korea, researchers explored the relationship between retinal
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  microvasculature and coronary artery disease.
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  They found that abnormalities in the retinal microvasculature, observed through ophthalmic
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  optical coherence tomography angiography, were associated with subclinical coronary
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  atherosclerosis, as detected by coronary computed tomography angiography.
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  The study involved a retrospective cohort of healthy Korean volunteers who participated in a
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  health screening program.
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  The researchers discovered that an inverse linear relationship existed between parafoveal
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  vascular density and coronary artery disease burden.
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  This means that as the parafoveal vascular density decreased, the coronary artery disease
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  burden increased.
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  The investigators reported specific cutoffs for superficial and deep capillary plexus
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  parafoveal vascular density, which improved multivariable cardiovascular risk models
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  predicting obstructive and severe coronary artery disease.
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  Although the incremental gain in discriminative power was limited, the clinical value lies in
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  the potential application of optical coherence tomography angiography as a noninvasive,
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  opportunistic screening tool in real-world ophthalmology settings.
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  The study findings suggest that reduced parafoveal vascular density may reflect a
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  greater burden of subclinical coronary atherosclerosis.
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  This could help identify individuals who might benefit from further coronary evaluation,
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  beyond traditional risk factors.
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  This is particularly relevant because coronary screening is often overlooked in individuals
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  without known systemic diseases, despite their potential risk.
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  The research team conducted a retrospective study of asymptomatic individuals with elevated
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  cardiovascular risk who volunteered for a health screening program from 2015 to 2020.
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  The study included 1,286 participants with a mean age of 64.2 years, of which 37.5% were
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  women.
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  Among these participants, notable comorbidities included diabetes, hypertension, and
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  hyperlipidemia.
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  Interestingly, while 52% of participants had a coronary artery calcium score of zero, plaque
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  was detected in 62.5% of them, and severe coronary artery disease in 9.3%.
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  The study found that greater coronary artery calcium scores and more findings of coronary
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  artery disease were associated with decreasing superficial and deep parafoveal vascular
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  density.
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  It's important to note that this study was limited by its single-center design, and
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  certain participants were excluded due to ocular conditions that could interfere with the
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  optical coherence tomography angiography results.
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  Despite these limitations, the findings add to the growing body of evidence suggesting that
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  changes in the retinal microvasculature can serve as a biomarker for impaired systemic
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  microcirculation or coronary artery disease risk.
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  In summary, the research supports the potential for noninvasive retinal scans to act as a
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  valuable screening tool for silent heart disease, offering a new avenue for identifying
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  individuals who may benefit from early coronary evaluation.
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  Let's delve into the potential life-extending benefits of weight loss drugs, as highlighted
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  by recent research.
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  According to a study conducted by Swiss Re, a reinsurance company based in Zurich,
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  Switzerland, medications used for diabetes and weight loss, specifically those targeting the
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  glucagon-like peptide-1, or GLP-1, receptors, could significantly reduce mortality rates
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  among Americans.
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  The researchers project that by the year 2045, these drugs could lead to a 6.4 percent
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  reduction in all-cause mortality in the United States.
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  Similarly, in the United Kingdom, a reduction of over 5 percent in mortality is anticipated
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  over the next two decades.
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  The United States and the United Kingdom share high obesity rates, and there's been strong
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  uptake of these GLP-1 drugs.
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  Currently, the United States holds the highest obesity rate globally, with over 40 percent of
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  the adult population classified as obese.
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  In the United Kingdom, about 30 percent of adults fall into this category.
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  Obesity is a significant factor that has stalled progress in life expectancy, as it's
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  linked to 70 percent of the leading causes of death in high-income countries, such as heart
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  disease, stroke, Alzheimer's disease, and various cancers.
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  The researchers from Swiss Re suggest that by improving baseline risk factors, GLP-1 drugs
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  may contribute to mortality improvements over time, potentially saving millions from
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  premature death.
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  However, they emphasize that to maximize the benefits of these medications, individuals
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  should also adopt lifestyle changes that promote long-term health improvements.
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  Without sustainable changes, like a healthy diet and regular exercise, weight regain and
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  rebound effects are common.
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  Paul Murray, Chief Executive Officer of Life & Health Reinsurance at Swiss Re, commented on
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  these findings, noting the significant promise these drugs hold in helping combat the obesity
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  epidemic.
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  He highlighted that the full benefit will come from looking beyond medication alone.
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  As insurers, there's an opportunity to build partnerships, support policy initiatives, and
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  encourage people to make meaningful lifestyle changes focused on prevention.
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  If implemented correctly, these strategies can strengthen the insurance safety net and
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  contribute to longer, healthier lives.
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  The scope of GLP-1 medications extends beyond just weight loss and diabetes management.
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  Recent studies have shown improvements in various conditions, including heart, kidney,
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  liver, and skin conditions, as well as arthritis, cognitive decline, addiction, and
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  even certain cancers.
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  Dr.
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  Sue Decotiis, a triple board-certified weight loss physician based in New York, confirmed
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  that patients have experienced improvements in numerous conditions while on these medications.
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  She explained that by reducing the volume of fat cells in the body, the inflammatory
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  cytokines produced by these cells are also reduced, potentially leading to decreased risks
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  of autoimmune diseases, cancer, and other health issues.
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  In summary, while these weight loss drugs offer a promising tool for reducing mortality and
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  improving overall health, it's crucial to approach them with respect and to use them in
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  conjunction with lifestyle modifications.
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  This holistic approach is key to unlocking the full potential of these medications and
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  ensuring that individuals can enjoy longer, healthier lives.
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  More than two hundred cases of measles have been confirmed across Manitoba so far this
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  year, as public health officials have issued a new warning about potential exposure at a
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  Winnipeg hospital.
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  According to the latest updates from Manitoba Health, there have been two hundred four
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  confirmed cases and sixteen probable cases reported in 2025 up to September thirteenth.
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  This marks a significant increase, with six new cases reported just since last week.
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  The province has specifically alerted the public to a possible exposure site at St.
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  Boniface General Hospital.
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  Anyone who was at the hospital's cafeteria on September twelfth between noon and two-thirty
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  p.m.
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  is advised to monitor for measles symptoms until October fourth.
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  Symptoms to watch for include fever, runny nose, drowsiness, red eyes, and small white
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  dots inside the throat and mouth.
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  A characteristic red skin rash often appears a few days after these initial symptoms.
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  Public health officials have also identified another possible exposure site earlier this
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  month at the New Life Fellowship Church in Hochfeld, about one hundred kilometers
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  southwest of Winnipeg.
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  Anyone who was at the church on September seventh between ten a.m.
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  and two p.m.
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  should watch for symptoms until September twenty-seventh.
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  Similarly, those who were at the New Life Fellowship School on September eighth from nine
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  a.m.
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  to two p.m.
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  should remain vigilant for symptoms until September thirtieth.
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  Measles is highly contagious and can spread through the air via droplets when an infected
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  person coughs, sneezes, or talks.
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  The virus can linger on surfaces for up to two hours after contact with an infected person.
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  Dr.
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  Davinder Singh, a medical officer of health with the Southern Health regional health
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  authority, reported that thirteen Manitobans have been hospitalized with measles this year,
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  with two requiring intensive care.
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  Alarmingly, the majority of these hospitalizations involve unvaccinated children
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  under the age of ten.
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  Canada had achieved measles elimination status in 1998, but with the recent outbreak that
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  began in October 2024, the country risks losing this status.
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  Public health officials are urging parents to ensure their children's immunization records
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  are up to date, as vaccination remains the best protection against measles.
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  In Manitoba, children are routinely given a two-dose vaccine program for measles, mumps,
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  rubella, and varicella starting at one year old and again between ages four and six.
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  However, a second dose can be administered earlier if exposure occurs.
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  In response to the rising cases, Manitoba Health expanded vaccine eligibility in May to
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  include babies aged six to twelve months in the Southern Health region and the
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  Interlake-Eastern Regional Health Authority area, where case counts have been particularly
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  high.
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  Since this expansion, approximately one thousand one hundred eighty infants have
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  received the vaccine.
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  This proactive measure aims to curb the spread of measles and protect vulnerable populations.
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  Today, we're addressing a critical warning issued by the Food and Drug Administration
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  concerning unauthorized infant monitoring devices.
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  The agency has flagged several devices that claim to prevent sudden unexpected infant
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  death, or SUID, as well as sudden infant death syndrome, commonly known as SIDS.
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  The Food and Drug Administration emphasized that no devices have been authorized for these
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  claims, and they have not evaluated the safety or effectiveness of any such devices currently
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  available on the market.
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  The Food and Drug Administration's safety communication highlights that these infant
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  monitors are intended to alert caregivers to values outside of set thresholds, prompting
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  necessary interventions such as contacting their physicians or seeking emergency care.
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  However, the issue arises when inaccurate measurements from unauthorized devices lead to
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  unnecessary medical care or, worse yet, fail to detect critical changes in an infant's
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  condition, delaying essential treatment or missing the detection of a medical condition
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  altogether.
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  The Food and Drug Administration reiterated its stance against the use of baby products
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  claiming to prevent SUID or SIDS, including infant sleep positioners, mattresses, crib
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  tents, and other crib bedding.
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  These products can actually pose a risk to infants, potentially leading to serious
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  injuries such as suffocation.
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  The agency stressed that infant monitors should not replace adult supervision or safe sleep
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  practices, which are crucial for ensuring an infant's safety.
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  Moreover, the Food and Drug Administration pointed out the risk of adverse tissue
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  reactions, such as burns or rashes, associated with unauthorized devices worn by infants.
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  Healthcare providers are encouraged to discuss these risks with caregivers and guide them in
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  selecting Food and Drug Administration-authorized monitoring devices if
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  needed.
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  Caregivers can verify the authorization of an infant monitoring device by checking the Food
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  and Drug Administration's De Novo and 510(k) databases using the device's name.
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  The Food and Drug Administration urges the public to report any problems with baby
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  monitors, such as inaccurate measurements or adverse events, through the MedWatch Voluntary
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  Reporting Form.
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  Healthcare personnel working in facilities subject to the Food and Drug Administration's
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  reporting requirements should adhere to their facility's established procedures for reporting
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  issues.
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  In closing, today's discussions spotlight the importance of verifying the safety and
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  effectiveness of medical devices, especially those intended for vulnerable populations like
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  infants.
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  As always, ensuring that the products we use are authorized and properly vetted can make a
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  significant difference in health and safety outcomes.
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  Thank you for joining me on this episode of Morning Medical with Dr.
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  Chow.
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  Stay informed, stay safe, and I'll see you next time.