How To Avoid Mental Blind Spots When Thinking About Covid-19 Vaccine Risks | Canada News Media
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How To Avoid Mental Blind Spots When Thinking About Covid-19 Vaccine Risks

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Millions of Americans have received Covid-19 vaccines. Over 10% of individuals in many states have received one dose, and the U.S. is on pace to secure enough vaccines to cover all adults across the nation by the end of July. These are encouraging developments as public officials work to vaccinate the majority of adults across the country.

But the U.S. will fail to fully reap the benefits of vaccines if enough citizens don’t take them. Unfortunately, there are reasons to worry about this dynamic, with recent polls suggesting that 30% to 40% of Americans would “probably” or “definitely” not get a Covid-19 vaccine.

One major reason for this is a fear of side effects. Among people who would decline vaccination, nearly two-thirds cited concerns about side effects. My own experience corroborates this: over the last several months, I have had loved ones and colleagues from around the country reach out to express vaccine apprehension.

It is important to avoid cognitive biases about Covid-19 vaccines, and even more so about potential side effects given widespread public concerns. Americans can take two steps to avoid cognitive errors when considering Covid-19 vaccine side effects.

Recognize Your Point Of Comparison

A foundational insight from behavioral science is that human perceptions can be influenced by “reference points.” Individuals’ prior experiences with a brand or product can serve as references for determining their satisfaction with it (how do current and prior experiences compare?).

People may judge professional changes – a new job or boss – based on current circumstances (how does it compare to the status quo?), expected circumstances (how does it compare to changes I was expecting?), or others’ circumstances (how does it compare to others’ situations?). Behavioral scientists refer to this phenomenon as reference dependence: the tendency to consider gains and losses relative to a specific reference point.


Americans can take several steps to ensure that they are thinking clearly about vaccine side effects.


This insight is highly relevant for Covid-19 vaccine decisions. Younger people without chronic conditions may compare vaccination with their status quo of good health, reference points that can make vaccination seem like a risky, low reward choice (why would I risk side effects for the good health I have now?).

Unfortunately, the pandemic remains active around the world, with new variants emerging and America reaching nearly 250,000 daily cases as recently as January. Therefore, for many people, a better reference point for vaccine side effects might be the effects of contracting Covid-19 itself.

Side effects of a vaccination might seem large when compared to perfect health or the expectation of continued good health. They strike differently when compared to the risks of being hospitalized, put on a ventilator, suffering long-term complications, or dying from the virus.

Think About How The Risk Is Framed

Another principle from behavioral science is that humans tend to make decisions using the framework within which a choice is presented. These framing effects have been observed in many different settings, including health care.

For example, framing can influence patients’ willingness to accept treatments – for instance, whether a surgical procedure is framed positively (e.g., 80% success rate) or negatively (e.g., 20% failure rate). In prior work, I’ve shown that physician support for policies penalizing inappropriate treatments can be affected by how treatment harms are framed.

The insight for Covid-19 vaccination is that Americans’ willingness to accept side effect risks may depend on how they are framed – the difference between a 1% chance of experiencing a side effect versus a 99% chance of avoiding it. Importantly, framing can also be updated as we gain more experience with vaccination: a 99% chance of avoiding a side effect would be more powerful if it reflects the experiences of millions, not thousands.

To be sure, there are no silver bullets or one-size-fits-all solutions for addressing vaccine fears. As I’ve noted before, cognitive errors can also cut both ways: people predisposed to believe in vaccines must also guard against the tendency to overlook emerging information about side effects and other harms. We must all remain vigilant about faulty reference points, framing, and blind spots as we continue to learn more about Covid-19.

Nonetheless, Americans can take several steps to ensure that they are thinking clearly about vaccine side effects. Doing so is a critical part of achieving the potential of Covid-19 vaccines as tools for overcoming the pandemic.

Diclosure: Joshua Liao reports stock investments in Johnson & Johnson, which owns Janssen Biotech, Inc., a Covid-19 vaccine developer.

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Canada to donate up to 200,000 vaccine doses to combat mpox outbreaks in Africa

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The Canadian government says it will donate up to 200,000 vaccine doses to fight the mpox outbreak in Congo and other African countries.

It says the donated doses of Imvamune will come from Canada’s existing supply and will not affect the country’s preparedness for mpox cases in this country.

Minister of Health Mark Holland says the donation “will help to protect those in the most affected regions of Africa and will help prevent further spread of the virus.”

Dr. Madhukar Pai, Canada research chair in epidemiology and global health, says although the donation is welcome, it is a very small portion of the estimated 10 million vaccine doses needed to control the outbreak.

Vaccine donations from wealthier countries have only recently started arriving in Africa, almost a month after the World Health Organization declared the mpox outbreak a public health emergency of international concern.

A few days after the declaration in August, Global Affairs Canada announced a contribution of $1 million for mpox surveillance, diagnostic tools, research and community awareness in Africa.

On Thursday, the Africa Centres for Disease Control and Prevention said mpox is still on the rise and that testing rates are “insufficient” across the continent.

Jason Kindrachuk, Canada research chair in emerging viruses at the University of Manitoba, said donating vaccines, in addition to supporting surveillance and diagnostic tests, is “massively important.”

But Kindrachuk, who has worked on the ground in Congo during the epidemic, also said that the international response to the mpox outbreak is “better late than never (but) better never late.”

“It would have been fantastic for us globally to not be in this position by having provided doses a much, much longer time prior than when we are,” he said, noting that the outbreak of clade I mpox in Congo started in early 2023.

Clade II mpox, endemic in regions of West Africa, came to the world’s attention even earlier — in 2022 — as that strain of virus spread to other countries, including Canada.

Two doses are recommended for mpox vaccination, so the donation may only benefit 100,000 people, Pai said.

Pai questioned whether Canada is contributing enough, as the federal government hasn’t said what percentage of its mpox vaccine stockpile it is donating.

“Small donations are simply not going to help end this crisis. We need to show greater solidarity and support,” he said in an email.

“That is the biggest lesson from the COVID-19 pandemic — our collective safety is tied with that of other nations.”

This report by The Canadian Press was first published Sept. 13, 2024.

Canadian Press health coverage receives support through a partnership with the Canadian Medical Association. CP is solely responsible for this content.

The Canadian Press. All rights reserved.

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How many Nova Scotians are on the doctor wait-list? Number hit 160,000 in June

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HALIFAX – The Nova Scotia government says it could be months before it reveals how many people are on the wait-list for a family doctor.

The head of the province’s health authority told reporters Wednesday that the government won’t release updated data until the 160,000 people who were on the wait-list in June are contacted to verify whether they still need primary care.

Karen Oldfield said Nova Scotia Health is working on validating the primary care wait-list data before posting new numbers, and that work may take a matter of months. The most recent public wait-list figures are from June 1, when 160,234 people, or about 16 per cent of the population, were on it.

“It’s going to take time to make 160,000 calls,” Oldfield said. “We are not talking weeks, we are talking months.”

The interim CEO and president of Nova Scotia Health said people on the list are being asked where they live, whether they still need a family doctor, and to give an update on their health.

A spokesperson with the province’s Health Department says the government and its health authority are “working hard” to turn the wait-list registry into a useful tool, adding that the data will be shared once it is validated.

Nova Scotia’s NDP are calling on Premier Tim Houston to immediately release statistics on how many people are looking for a family doctor. On Tuesday, the NDP introduced a bill that would require the health minister to make the number public every month.

“It is unacceptable for the list to be more than three months out of date,” NDP Leader Claudia Chender said Tuesday.

Chender said releasing this data regularly is vital so Nova Scotians can track the government’s progress on its main 2021 campaign promise: fixing health care.

The number of people in need of a family doctor has more than doubled between the 2021 summer election campaign and June 2024. Since September 2021 about 300 doctors have been added to the provincial health system, the Health Department said.

“We’ll know if Tim Houston is keeping his 2021 election promise to fix health care when Nova Scotians are attached to primary care,” Chender said.

This report by The Canadian Press was first published Sept. 11, 2024.

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Newfoundland and Labrador monitoring rise in whooping cough cases: medical officer

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ST. JOHN’S, N.L. – Newfoundland and Labrador‘s chief medical officer is monitoring the rise of whooping cough infections across the province as cases of the highly contagious disease continue to grow across Canada.

Dr. Janice Fitzgerald says that so far this year, the province has recorded 230 confirmed cases of the vaccine-preventable respiratory tract infection, also known as pertussis.

Late last month, Quebec reported more than 11,000 cases during the same time period, while Ontario counted 470 cases, well above the five-year average of 98. In Quebec, the majority of patients are between the ages of 10 and 14.

Meanwhile, New Brunswick has declared a whooping cough outbreak across the province. A total of 141 cases were reported by last month, exceeding the five-year average of 34.

The disease can lead to severe complications among vulnerable populations including infants, who are at the highest risk of suffering from complications like pneumonia and seizures. Symptoms may start with a runny nose, mild fever and cough, then progress to severe coughing accompanied by a distinctive “whooping” sound during inhalation.

“The public, especially pregnant people and those in close contact with infants, are encouraged to be aware of symptoms related to pertussis and to ensure vaccinations are up to date,” Newfoundland and Labrador’s Health Department said in a statement.

Whooping cough can be treated with antibiotics, but vaccination is the most effective way to control the spread of the disease. As a result, the province has expanded immunization efforts this school year. While booster doses are already offered in Grade 9, the vaccine is now being offered to Grade 8 students as well.

Public health officials say whooping cough is a cyclical disease that increases every two to five or six years.

Meanwhile, New Brunswick’s acting chief medical officer of health expects the current case count to get worse before tapering off.

A rise in whooping cough cases has also been reported in the United States and elsewhere. The Pan American Health Organization issued an alert in July encouraging countries to ramp up their surveillance and vaccination coverage.

This report by The Canadian Press was first published Sept. 10, 2024.

The Canadian Press. All rights reserved.

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