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Survey finds physicians show stronger intergroup bias than public on vaccinesDoctors Show Strong Bias Against Vaccine-Hesitant Patients

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Key Takeaway
Recognize that physicians may exhibit stronger intergroup bias than the public regarding vaccines, warranting awareness and communication strategies.

This review summarizes findings from an online survey conducted in Japan, which included 492 physicians and 5,252 members of the general public. The survey examined intergroup bias related to vaccines for influenza, measles, HPV, and COVID-19. Participants were categorized by physician status and agreement group, and the primary outcome was intergroup bias.

The results showed that intergroup bias was significantly positive in both agreement and disagreement groups across all vaccine types, with a higher effect size in the agreement group. Notably, physicians exhibited higher intergroup bias than the general public. The authors did not report any limitations, adverse events, or funding sources.

As an observational survey, these findings cannot establish causality. The authors suggest that interventions to raise physicians' awareness of their own bias, alongside communication strategies for vaccine-hesitant individuals, are needed. Clinicians should interpret these results with caution given the study's design and lack of reported limitations.

Maria hasn’t had a flu shot in five years. She’s not against all vaccines—but she wants to talk through risks first. When she brought this up with her doctor, he sighed, rolled his eyes, and said, “I guess I can’t help someone who won’t listen.” She left feeling judged—and hasn’t returned.

She’s not alone. Millions of people have questions about vaccines. Some delay. Some skip certain ones. And many say their doctors make them feel dismissed.

But here’s what few realize: the discomfort isn’t one-sided.

Doctors often say they face anger and threats from vaccine-hesitant patients. Yet new research shows many physicians also carry strong negative feelings toward those who disagree with them.

This bias cuts across all vaccine types—flu, measles, HPV, and COVID-19. And it’s stronger among doctors than in the general public.

Doctors are more divided than we thought.

The Hidden Divide in the Exam Room

Vaccine hesitancy gets a lot of attention. Public health campaigns, news stories, and clinic posters all aim to reach people who delay or refuse shots.

But most of the focus is on the patient. Rarely do we ask: How do doctors really feel about these conversations?

In Japan, researchers asked exactly that. They surveyed nearly 5,800 people—including 492 doctors—about their feelings toward others based on vaccine views.

They used a simple tool: a “feeling thermometer.” People rated how warm or cold they felt toward those who agreed or disagreed with their own vaccine choices.

The gap between those ratings—positive for “like me,” negative for “not like me”—is called intergroup bias.

And the results were clear.

Bias existed on all sides. But doctors showed stronger bias than the public.

It didn’t matter which vaccine—flu, measles, HPV, or COVID-19. The pattern held.

Even when doctors agreed with someone’s choice, they still viewed vaccine-hesitant people more negatively than the public did.

Doctors Feel It More

Why does this happen?

One clue: identity. For many doctors, supporting vaccines isn’t just policy—it’s part of who they are.

Think of it like a uniform. Wearing scrubs isn’t just about clothing. It signals duty, science, care.

When someone questions vaccines, it can feel like they’re not just doubting a shot—they’re doubting the doctor’s values, training, and mission.

That emotional weight can shape how doctors respond—even if they don’t realize it.

And the stronger the agreement with vaccines, the stronger the bias.

Yes, even among those who fully support vaccination, doctors felt colder toward hesitant patients than the public did.

This isn’t about yelling or refusal. It’s about quiet judgment. A tone. A pause. A look.

Patients feel it. And it pushes them away.

A Two-Way Trust Problem

Trust goes both ways in health care.

Patients need to trust doctors. But doctors also need to stay open to patients—even when beliefs clash.

When bias creeps in, conversations shut down. Questions go unanswered. Misunderstandings grow.

And the people who need care most—those with concerns, fears, or past bad experiences—end up avoiding the system.

This is especially true for HPV and flu vaccines, where uptake is already uneven.

One mother might delay the HPV shot out of worry about side effects. A college student might skip the flu vaccine because they’ve never been sick.

They’re not anti-science. They’re cautious.

But if they meet a doctor who sees them as “difficult” or “misinformed,” they’re less likely to come back.

But There’s a Catch

This study was done in Japan. Cultural norms around medicine and authority may shape these results.

Also, it relied on self-reported feelings. No direct patient interactions were observed.

And while the sample was large, it was online—so it may not reflect all doctors or patients.

Still, the trend is concerning.

Bias doesn’t have to be loud to do harm.

It can be a slight hesitation. A change in tone. A decision to spend less time.

Those small moments add up.

Experts say the goal isn’t to blame doctors. It’s to help them see blind spots.

Medical training focuses on science, not self-awareness.

Few doctors are taught to reflect on their own biases—especially when they believe they’re defending public health.

But awareness is the first step.

What This Means for Patients

If you’ve ever felt judged for your vaccine choices, you’re not imagining it.

This study suggests those feelings may reflect a real pattern—one that even well-meaning doctors can unknowingly contribute to.

That doesn’t mean you should avoid vaccines. Or stop seeing doctors.

But it does mean your comfort matters.

If a doctor makes you feel small for asking questions, it’s okay to seek someone else.

Good care includes respect—even when views differ.

And for doctors, the message is clear: listening without judgment isn’t weakness. It’s skill.

Building trust takes time. But it starts with one conversation.

What Happens Next

The researchers call for training programs to help doctors recognize their own biases.

Simple tools—like self-reflection exercises or communication workshops—could make a big difference.

Other countries may now run similar studies to see if the pattern holds elsewhere.

For now, the message is not about blame—but balance.

Vaccine trust won’t grow through pressure. It grows through connection.

And that starts with both sides feeling heard.

Study Details

EvidenceLevel 5
PublishedApr 2026
View Original Abstract ↓
While vaccination conflicts have become apparent, physicians' attitudes toward those with differing views remain unclear. Through an online survey of 492 physicians and 5,252 members of the general public in Japan in February 2026, we investigated attitudes toward four vaccines (influenza, measles, HPV, and COVID-19). Intergroup bias was assessed as ingroup minus outgroup attitudes using a feeling thermometer. Multilevel regression examined associations with agreement group and physician status. Intergroup bias was significantly positive in both agreement and disagreement groups across all vaccine types, and was higher in the agreement group. Physicians exhibited higher intergroup bias than the general public. These findings indicate that vaccination conflict is bidirectional: physicians, often viewed as targets of hostility from vaccine-hesitant individuals, themselves exhibit greater intergroup bias toward those with opposing views. Interventions to raise physicians' awareness of their own bias, alongside communication strategies for vaccine-hesitant individuals, are needed.
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