Latest / Morning Medical with Dr. Chow / Infant Mortality Decline, Wildfire Smoke Effects, and Measles Outbreak in Ontario

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Infant Mortality Decline, Wildfire Smoke Effects, and Measles Outbreak in Ontario · Morning Medical with Dr. Chow

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  Welcome to another episode of Morning Medical with Dr.
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  Chow, where we dive into the latest medical and health news from around the globe.
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  I'm Dr.
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  Chi-Ming Chow, your host for today.
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  As always, we're here to bring you the most up-to-date and insightful information, enhanced
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  by artificial intelligence, to keep you informed about the ever-evolving world of
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  medicine.
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  Today, we're starting with some promising news from the United States regarding infant
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  mortality rates.
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  The nation's infant mortality rate saw a noteworthy decline in 2024, after being
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  relatively stagnant for two years during the late pandemic period.
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  This drop is partly attributed to a vaccination campaign against respiratory syncytial virus,
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  or RSV, which is a virus that often causes cold-like symptoms but can be particularly
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  dangerous for infants.
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  Provisional data from the Centers for Disease Control and Prevention shows that the infant
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  mortality rate fell to approximately 5.5 infant deaths per 1,000 live births in 2024.
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  This is a slight but significant decrease from the previous rate of 5.6 per 1,000 live births,
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  which had remained unchanged for the two prior years.
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  In terms of actual numbers, there were about 19,900 infant deaths in 2024, down from around
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  20,150 in 2023.
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  The United States has historically experienced higher infant mortality rates compared to other
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  high-income countries.
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  Experts often point to factors such as poverty and inadequate prenatal care as contributing
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  reasons.
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  However, over the decades, the rate has generally improved due to advances in medical
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  technology and public health initiatives.
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  The years 2022 and 2023 saw a slight increase in the infant mortality rate, with experts
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  attributing this to a rebound in RSV and influenza infections following pandemic-related
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  precautions.
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  To combat this, U.S.
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  health officials in 2023 recommended two new preventative measures.
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  One involved administering a lab-made antibody shot to infants to boost their immune systems
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  against RSV, and the other was offering an RSV vaccine to pregnant women between 32 and 36
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  weeks of gestation.
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  Dr.
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  Amanda Williams, the interim chief medical officer for the March of Dimes, suggests that
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  these measures are likely contributing factors to the recent improvement in infant mortality
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  rates.
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  Additionally, a separate report from the Centers for Disease Control and Prevention
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  noted a more than 40% reduction in infant hospitalizations during the 2024-2025
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  respiratory virus season compared to previous averages.
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  However, Dr.
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  Williams emphasizes that more research is needed to fully understand all the factors
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  contributing to this decline.
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  While the reduction in RSV-related deaths is a significant factor, other causes, including
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  accidents, homicides, or sudden infant death syndrome, may also play a role.
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  It's important to continue exploring these areas to ensure a sustained decrease in infant
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  mortality rates.
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  In recent years, the impact of climate change on the frequency and intensity of wildfires has
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  been heavily scrutinized.
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  A recent study published in Nature Communications Earth & Environment reveals
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  alarming findings about the health repercussions of wildfire smoke in the United
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  States.
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  This study, conducted by a team of multidisciplinary researchers, indicates that
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  climate change has contributed to approximately fifteen thousand deaths from exposure to small
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  particulate matter from wildfires between 2006 and 2020.
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  These tiny particles, known as PM2.5, can penetrate deep into the lungs, causing a range
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  of health issues from short-term symptoms like coughing and itchy eyes to more severe, chronic
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  conditions.
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  The researchers found that the annual death toll from wildfire smoke ranged from one
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  hundred thirty to five thousand one hundred, with the highest numbers reported in states
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  like Oregon and California.
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  The study also estimated the economic cost of these deaths to be around one hundred sixty
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  billion dollars.
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  Dr.
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  Nicholas Nassikas, one of the study's authors and a physician at Harvard Medical School,
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  highlights the increasing frequency of wildfire smoke events and the significant health
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  implications they carry.
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  Lisa Thompson, a professor at Emory University who specializes in air pollution and climate
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  change, praised the study for isolating the specific impact of climate change on mortality
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  rates.
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  The study's focus on deaths linked to PM2.5 exposure is particularly noteworthy, as these
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  particles are considered more toxic than other pollution sources.
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  This is especially true when wildfires spread into urban areas, where they can burn cars and
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  other materials that release additional toxic substances.
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  The study emphasizes that certain groups are more vulnerable to the effects of wildfire
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  smoke, including children, pregnant individuals, the elderly, and outdoor workers.
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  The Health Effects Institute has estimated that PM2.5 from wildfire smoke is responsible for
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  four million deaths worldwide.
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  As global warming leads to drier conditions, particularly in the western United States, it
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  exacerbates the risk of wildfires by drying out vegetation that serves as fuel for these fires.
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  Jacob Bendix, a professor emeritus at Syracuse University, expressed dismay at the study's
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  findings, noting that the impacts of wildfire smoke are far-reaching and significant.
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  While the study effectively links climate change to increased wildfire activity, some
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  experts, like Marshall Burke from Stanford University, point out the complexities of
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  linking burned areas directly to smoke and subsequent health outcomes due to variable
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  factors like wind patterns.
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  Additionally, Patrick Brown from Johns Hopkins University raises concerns about the study
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  potentially underestimating the impact of non-climate factors on wildfires.
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  He emphasizes the importance of considering other immediate interventions, such as fuel
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  breaks and prescribed burns, alongside efforts to reduce greenhouse gas emissions.
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  Dr.
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  Nassikas concurs, noting that while land management practices can mitigate some risks,
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  the overarching issue of climate change must be addressed to prevent further health impacts
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  from wildfire smoke.
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  Recent research has unveiled a potential link between living near golf courses and an
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  increased risk of developing Parkinson's disease.
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  This was highlighted in a study led by Brittany Krzyzanowski, Doctor of Philosophy, from the
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  Barrow Neurological Institute in Phoenix, published in JAMA Network Open.
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  The study found that individuals living within one mile of a golf course had more than double
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  the odds of developing Parkinson's disease compared to those living more than six miles
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  away.
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  This was after adjusting for various factors such as patient demographics and neighborhood
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  characteristics.
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  The study also pointed out that living in water service areas with golf courses in regions
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  vulnerable to groundwater contamination showed a higher risk of Parkinson's.
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  These vulnerable regions often have features like coarse textured soils, shallow bedrock, or
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  karst geology, which Krzyzanowski explains can allow pesticides used on golf courses to seep
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  more readily into the groundwater supply after rainfalls.
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  Karst topography, in particular, is a geological formation where limestone bedrock
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  dissolves over time, creating underground voids that facilitate the rapid movement of surface
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  water into the groundwater system.
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  This means that pesticides, which have long been used to maintain golf courses, can
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  potentially contaminate drinking water supplies.
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  Pesticides such as paraquat and rotenone have been linked to Parkinson-like
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  neurodegeneration, primarily through mechanisms involving oxidative stress and mitochondrial
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  dysfunction.
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  Krzyzanowski advises individuals living near golf courses to be proactive in reducing their
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  exposure to these potential risks.
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  She suggests contacting local golf courses to inquire about pesticide spraying schedules and
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  staying indoors during these times.
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  Additionally, using carbon water filters may help reduce the risk of contamination from the
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  drinking water.
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  The study's findings underscore the need for further research to fully understand the risks.
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  Although this study provides a significant insight into the potential environmental
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  factors contributing to Parkinson's disease, more comprehensive studies are needed.
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  Krzyzanowski and her team plan to extend their research nationwide, utilizing a larger dataset
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  that includes millions of Medicare beneficiaries and thousands of golf courses.
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  In a concerning development, Ontario has reported nearly two hundred new measles cases
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  over the past week, as this highly contagious disease continues to spread across Canada.
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  Public Health Ontario has confirmed that one hundred ninety-seven additional people have
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  been infected, bringing the total number of probable and confirmed cases in the province to
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  one thousand four hundred forty since the outbreak began in October.
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  The impact of this outbreak is significant, with one hundred one hospitalizations reported,
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  including seventy-five children.
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  Alarmingly, eight patients have required intensive care.
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  The measles virus, known for its high transmissibility, has now reached new regions
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  in the country, with Nova Scotia and the Northwest Territories documenting their first
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  cases since the onset of this outbreak.
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  In Toronto, public health officials have issued warnings about potential measles exposure at
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  Ripley's Aquarium, urging anyone who visited during certain times to be vigilant for
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  symptoms.
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  The health minister and the premier have been defending Ontario's response to the escalating
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  situation, which has seen almost five hundred cases concentrated in the southwestern public
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  health unit of Ontario.
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  Alberta has also been grappling with this outbreak, reporting an overall case count
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  nearing three hundred since mid-March.
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  This includes three patients under the age of eighteen who are currently in intensive care.
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  Meanwhile, Saskatchewan has updated its cumulative case count to twenty-seven, and
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  Manitoba has reported twenty-four cases as of yesterday.
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  The majority of measles cases have been identified in unvaccinated children, infants,
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  and teenagers.
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  Health experts are emphasizing the need for increased vaccination efforts to curb the
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  spread of the virus.
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  Doctors are particularly urging a boost in measles vaccinations, as the outbreaks
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  accelerate in both Ontario and Alberta.
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  As we navigate the digital age, trust in how our digital health data is used has become a
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  critical issue.
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  A recent study from the University of Pennsylvania's Leonard Davis Institute of
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  Health Economics sheds light on how political outlooks can significantly influence this
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  trust.
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  Conducted by a team of researchers, including Carolyn Cannuscio, Raina Merchant, and David A.
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  Asch, the study examined Americans' trust in various organizations using their digital
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  health data, with a particular focus on political ideology.
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  The study found that in the wake of the COVID-19 pandemic, trust in these institutions
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  became increasingly polarized.
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  Overall, consumer confidence in most institutions remained relatively stable from
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  2020 to 2022.
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  However, there was a modest increase in trust towards the federal government.
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  This generalized stability masks a deeper divide when the results are broken down by
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  political affiliation.
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  For liberal respondents, there was a 13 percentage-point increase in those who were
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  very, moderately, or somewhat confident in the federal government’s responsible use of digital
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  health data.
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  In stark contrast, conservative respondents showed declining confidence in key public
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  institutions.
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  Trust in the Centers for Disease Control and Prevention dropped by 10 percentage points, as
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  did confidence in the National Institutes of Health and the federal government.
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  This decline among conservatives may reflect a broader mistrust in federal agencies,
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  especially given their central role in pandemic policy and the political shifts following the
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  2020 election.
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  On the other hand, liberals showed less confidence in several private-sector technology
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  companies, whereas conservatives demonstrated a modest increase in trust towards these firms.
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  This growing polarization suggests that Americans are increasingly viewing data
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  governance through a political lens.
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  Confidence in public health institutions is now closely tied to one's political ideology, which
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  could complicate efforts to pass bipartisan digital privacy legislation.
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  Understanding whom the public trusts—and why—is essential to crafting effective public health
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  messaging and enacting meaningful privacy protections that resonate across the political
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  spectrum.
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  The study titled “Consumer Confidence in the Responsible Use of Digital Health Data After
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  the COVID-19 Pandemic” was published on February 26, 2025, in JAMA Network Open.
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  This research is crucial as it highlights the challenges and opportunities in digital health
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  data governance, emphasizing the need for policy frameworks that bridge political
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  divides.
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  And that brings us to the end of today's episode of Morning Medical with Dr.
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  Chow.
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  I hope you found our discussions enlightening and informative.
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  As always, our goal is to keep you updated on the most pressing health issues of our time.
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  Thank you for joining me today, and I look forward to having you with us again tomorrow.
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  Until then, stay curious and stay healthy.