Healthcare News

Has Vaccinology become a Cult?

Despite being someone who has had the traditional childhood vaccines, I increasingly find myself in the crosshairs of the vaccine debate simply for having the temerity to ask legitimate questions. Binary labels of pro-vaxxer and anti-vaxxer have come to dominate public discourse around vaccination, creating a polarized landscape where nuanced discussion appears increasingly unwelcome.

This raises an uncomfortable question: has the field of vaccinology, or at least the public conversation surrounding it, taken on characteristics more akin to ideological movements i.e. Cults rather than scientific inquiry?

Science thrives on questioning, scepticism, and rigorous debate. Yet the current vaccine dialogue often resembles tribal warfare more than scientific discussion. Express concern about a specific vaccine formulation, ask about the adequacy of long-term safety data, or question the necessity of a particular vaccine for low-risk populations, and you risk immediate labelling as an anti-vaxxer, a tag that carries significant social stigma and effectively ends all conversation.

This narrow framework ignores the vast territory between all vaccines are dangerous and all vaccines are beyond reproach. Many People occupy this middle ground - Parents who vaccinate their children on a delayed schedule, healthcare workers who support childhood vaccines but question annual flu shots, or researchers who advocate for certain vaccines while raising legitimate concerns about others.

The problem isn’t just semantic. When we collapse complex topics into simplistic categories, we make thoughtful analysis nearly impossible. A Physician who questions whether healthy adolescents need a particular booster is not equivalent to someone who believes all vaccines are bad - yet both may find themselves labelled identically in the public arena.

Scientific progress depends on asking difficult questions. In vaccinology, such questions might include:

What methodology establishes the gold standard in vaccine trials?

How do we balance population-level benefits against individual risks?

What constitutes adequate safety monitoring for novel vaccine technologies?

Should we ever consider vaccine mandates in a free society?

What are appropriate endpoints for vaccine trials, and

How long should follow-up periods last?

These are not fringe concerns, they’re fundamental to evidence-based medicine. Yet raising them publicly has become fraught with professional and social risk. Researchers report reluctance to publish findings that might be misused by vaccine sceptics. Clinicians describe hesitation to discuss vaccine adverse events with Patients for fear of being accused of causing vaccine hesitancy. Journal editors face pressure regarding what vaccine-related research to publish, careful not to offend Big Pharma who often account for up to 75% of their revenue stream.

This creates a chilling effect on scientific debate. When certain questions become unspeakable, when researchers self-censor for fear of being labelled or ostracized, the scientific process itself is compromised. Science conducted in an environment where only certain conclusions are acceptable is not science - it’s something more sinister.

In September 2021, the CDC modified its definition of a vaccine in ways that, depending on one’s perspective, either represented routine semantic clarification or raised troubling questions about institutional transparency. The definition changed from describing vaccination as introducing a vaccine to produce immunity to a specific disease to producing protection from a specific disease - a shift from immunity to protection.

I addressed this in the first part of our When is a Vaccine not a Vaccine series which you can read here.

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Health authorities explained this as semantic refinement to avoid misinterpretation, noting that no vaccine has ever been 100% effective. However, emails obtained through freedom of information requests revealed CDC officials acknowledged the change was made because -

people are using it to claim the COVID-19 vaccine

is not a vaccine based on our own definition

in other words, the definition was changed specifically because it had become inconvenient.

For some, this was a reasonable update to reflect scientific reality. For others, it represented something more troubling: the retrospective moving of goalposts to accommodate products that didn’t meet previously established standards. When definitions that have remained stable for decades suddenly change to align with new products rather than the products being required to meet existing standards, it’s understandable that questions arise.

The timing didn’t help. The change occurred during heated public debate about vaccine mandates and efficacy, precisely when trust in institutions was most crucial. Whether the change was scientifically justified or politically motivated becomes almost secondary to the perception it created - that authorities were willing to revise fundamental definitions to support a preferred narrative.

This episode exemplifies the broader problem. Perhaps the CDC’s explanation is entirely accurate and the change was purely about precision. But in an environment where asking questions is treated as heresy, where can such concerns be legitimately discussed? The inability to have that conversation without being immediately categorized as anti-vaccine is itself evidence of the problem.

The rhetoric surrounding vaccines has increasingly adopted characteristics of religious or ideological movements rather than scientific discussion.

Consider these patterns:

Heresy and Excommunication:
Scientists or Physicians who raise questions about vaccine policy or specific vaccines often face professional consequences, social media suspension, or removal from platforms, in other words, modern forms of excommunication for deviating from orthodoxy.

Sacred Texts and Unquestionable Authority:
The phrase trust the science has become a conversation-ending mantra, as though science were a monolithic authority rather than a process. Specific studies or pronouncements from health authorities are treated as inviolable, even when new evidence emerges or when the authorities themselves revise their positions.

Moral Absolutism:
Vaccination has been framed not just as a medical intervention but as a moral duty, with those who question it cast not merely as mistaken but as morally deficient, selfish, ignorant, or dangerous. This moral framing makes rational discussion nearly impossible.

Demands for Faith Over Evidence:
When people ask reasonable questions about vaccine efficacy, safety signals, or policy decisions, they’re often told they’re spreading misinformation rather than being engaged with evidence and reasoning. The demand is for trust rather than understanding.

Perhaps most troubling is how follow the science has become detached from actual scientific practice. Science is characterized by uncertainty, revision, and debate. Scientific conclusions are always provisional, subject to modification as new evidence emerges. The scientific method demands scepticism, replication, and the testing of alternative hypotheses.

Yet vaccine debate often presents scientific conclusions as absolute and beyond question. When health authorities revise their recommendations - as happened repeatedly during the COVID-19 debacle - those who questioned earlier pronouncements are not vindicated but criticized for having questioned at all. This reveals the fundamentally unscientific nature of demanding unquestioning acceptance rather than evidence-based understanding.

A field that cannot tolerate scrutiny is not practicing science -

it’s practicing something closer to faith.

This polarization carries real costs. It undermines public trust, as people who have legitimate questions feel dismissed or attacked rather than heard. It damages scientific credibility when the public sees researchers unwilling to engage with inconvenient data or acknowledge uncertainties. It potentially compromises vaccine safety monitoring when adverse events become politically charged topics rather than straightforward medical observations.

Most importantly, it harms individuals caught in the middle - people trying to make informed decisions about their health and their children’s health, who find themselves forced to choose between two extremes neither of which represents their actual position.

Moving forward requires acknowledging that vigorous debate about vaccines - their development, testing, deployment, and policies surrounding them - is not anti-scientific but essential to science. We need space for questions like:

What evidence standards should apply to different vaccine applications?

How should we balance speed of deployment against thoroughness of safety evaluation?

What level of adverse events is acceptable for what level of benefit, and who decides?

How can we improve vaccine safety monitoring and adverse event reporting?

What is the threshold for suspending a vaccine programme?

What role should personal choice play in public health interventions?

Who is liable when things go wrong?

These questions deserve thoughtful discussion not reflexive dismissal or tribal sorting.

In conclusion, science advances through questioning, not through the establishment of unquestionable dogma.

The binary framing of vaccine discussions and the insistence that one must be entirely pro or anti, serves neither science nor public health. It creates an environment where legitimate concerns are dismissed, where scientific debate is stifled, and where people are forced into camps that don’t represent their actual views.

If vaccinology has taken on cult-like characteristics, the remedy is not more fervent belief but a return to genuine scientific discourse. Open questioning, evidence-based, and a willingness to acknowledge both the benefits and the legitimate limitations and unknowns that characterize any medical intervention. Only by making space for nuance, uncertainty, and good-faith questioning can we restore the scientific credibility that polarization has eroded.

The question is not whether we trust vaccines, but whether we trust the scientific process itself with all its messy uncertainty, its demand for evidence, and its absolute requirement for the freedom to question.

Above all else, the right to choose must remain with the individual especially if we value freedom of choice in a free society otherwise we risk sinking into a medically-induced, dystopian nightmare.

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