Wrong About Polio: A Review of Suzanne Humphries, MD and Roman Bystrianyk’s “Dissolving Illusions” Part 1 (the long version)

Polio history is one of those subjects where a single chart can look persuasiveuntil you ask what the chart leaves out. Suzanne Humphries, MD, and Roman Bystrianyk’s book Dissolving Illusions argues that vaccines have received too much credit for the decline of infectious diseases, including polio. That claim has traveled widely through vaccine-skeptical circles because it sounds simple, dramatic, and faintly rebellious. Unfortunately, history is not a bumper sticker, and polio is not a disease that politely fits into a cherry-picked graph.

This long-form review examines why the book’s treatment of polio is misleading. The issue is not that sanitation, nutrition, and public health did not matter. They absolutely mattered. The issue is that Dissolving Illusions often treats those factors as if they cancel out vaccination, when the historical record shows something much more specific: polio epidemics rose in cleaner, more modern societies, and paralytic polio declined sharply only after effective vaccination campaigns began.

In plain English: better plumbing was wonderful, but it did not eliminate polio. The polio vaccine did the heavy lifting. Sanitation helped many diseases; polio was the awkward guest who refused to leave until immunization showed it the door.

What “Dissolving Illusions” Gets Wrong About Polio

The central problem with Dissolving Illusions is not that it asks questions. Good science welcomes questions. The problem is that it frames selected historical data in a way that suggests polio was already disappearing before vaccines, or that diagnostic changes and environmental toxins explain most of the decline. Those ideas may sound intriguing, but they do not hold up when compared with broader epidemiological evidence.

Polio was caused by poliovirus, a highly infectious virus that spreads mainly through the fecal-oral route. Most infections cause no visible symptoms, and some cause mild, flu-like illness. A small percentage, however, invade the nervous system and lead to weakness, paralysis, permanent disability, or death. That “small percentage” matters because when a virus infects millions, even a small risk becomes a national tragedy.

By the early and mid-20th century, Americans feared polio for good reason. Summer outbreaks closed pools, emptied movie theaters, and turned ordinary childhood activities into parental panic drills. In 1952, the United States experienced its worst polio year, with tens of thousands of reported cases and thousands of deaths. Hospitals used iron lungs for patients whose breathing muscles were paralyzed. This was not a branding problem. It was a real disease causing real paralysis.

The Sanitation Argument: True Facts, Wrong Conclusion

One of the most common vaccine-skeptical claims is that better sanitation, not vaccination, explains the fall of polio. This argument borrows a truth from one part of public health and misapplies it to another.

Sanitation Did Change Disease Patterns

Cleaner water, sewage systems, less crowded housing, and improved food safety helped reduce many deadly infections. That is not controversial. Public health deserves a trophy shelf for those achievements. However, polio behaved differently from diseases such as cholera or typhoid.

In earlier eras, infants were often exposed to poliovirus while still partly protected by maternal antibodies. Many infections were mild or unnoticed. As sanitation improved, exposure was delayed until later childhood or adolescence, when the risk of paralytic disease was higher. In other words, better hygiene may have unintentionally changed the age pattern of infection and helped make paralytic polio more visible and more severe in industrialized countries.

Why This Matters

This is where Dissolving Illusions stumbles. It treats sanitation as a rival explanation to vaccination, but for polio, the story is more complex. Improved sanitation did not make polio vanish. In some historical settings, it helped create the conditions in which larger paralytic outbreaks became possible. That is the opposite of the simplistic “clean water solved polio” narrative.

If sanitation alone had been enough, polio should have faded steadily as living conditions improved. Instead, the United States saw devastating epidemics in the first half of the 20th century, including the massive 1952 outbreak. The timing matters. The biggest decline came after the introduction and widespread use of polio vaccines.

The Vaccine Timeline: What Actually Happened

The first major breakthrough was Jonas Salk’s inactivated polio vaccine, licensed in the United States in 1955 after a massive field trial involving more than a million children. Later, Albert Sabin’s oral polio vaccine became widely used because it was easier to administer and helped reduce intestinal transmission. Both vaccines played major roles in controlling polio globally, although the United States eventually returned to an all-IPV schedule to eliminate the rare risk of vaccine-associated paralytic polio linked to oral vaccine use.

That last sentence is important because honest vaccine history includes both success and error. The Cutter incident in 1955, in which improperly inactivated vaccine from one manufacturer caused polio cases, was a serious tragedy. It led to strengthened vaccine regulation and safety oversight. Acknowledging the Cutter incident does not disprove polio vaccination. It shows why quality control matters and why modern vaccine systems are built with layers of oversight.

Polio Cases Fell After Vaccination

Before vaccination, paralytic polio was a recurring cause of disability in American children. After vaccination campaigns began, polio rates dropped dramatically. Wild poliovirus transmission was eventually eliminated from the United States, with the last outbreak of wild poliovirus occurring in 1979. The Americas were later certified polio-free.

This is the big historical picture that Dissolving Illusions does not adequately explain. If polio decline was mostly due to sanitation or reclassification, why did countries see such dramatic drops after vaccine introduction? Why did outbreaks continue in under-vaccinated communities? Why did the 2022 New York case involve an unvaccinated person, with wastewater surveillance showing transmission risk in communities with lower coverage? The vaccine explanation fits the pattern. The anti-vaccine explanation needs a lot of duct tape.

Diagnostic Changes: A Useful Detail, Not a Magic Eraser

Another argument often raised against polio vaccination is that changes in diagnostic criteria made polio appear to decline. It is true that case definitions and surveillance methods changed over time. Medical diagnosis always evolves. But this fact does not erase the decline in paralytic disease.

To make the diagnostic-change argument work, one would have to show that thousands of cases of paralysis simply got renamed after vaccination began, while the underlying burden remained similar. That is not what the record shows. Hospitals were not secretly full of “not-polio-but-basically-polio” patients after vaccines. Iron lungs did not remain in the same demand under a different label. Communities did not keep experiencing the same scale of summer paralysis with a new diagnosis slapped on the chart like a discount sticker.

Diagnostic changes can affect numbers around the edges. They cannot plausibly explain the collapse of epidemic polio after mass immunization.

The “Toxins Caused Polio” Claim

Some vaccine-skeptical arguments suggest that pesticides, arsenic, DDT, or other toxins caused what people called polio. Environmental toxins can harm the nervous system, and environmental health is a legitimate field. But poliomyelitis has a specific viral cause. Poliovirus can be isolated, studied, sequenced, and tracked. It spreads through human transmission patterns. Vaccines that generate immunity against poliovirus prevent paralytic disease.

The toxin theory also fails a basic test: it does not explain why polio declined in vaccinated populations, why outbreaks occur in under-immunized groups, or why poliovirus is detected in stool and wastewater during transmission events. Blaming toxins for polio is like blaming a flat tire on Mercury being in retrograde while ignoring the nail sticking out of the rubber.

Why the 2022 New York Case Matters

In 2022, an unvaccinated adult in Rockland County, New York, developed paralytic polio caused by vaccine-derived poliovirus type 2. This was not a case caused by the inactivated vaccine used in the United States. The U.S. has used only inactivated polio vaccine since 2000. Vaccine-derived poliovirus can emerge when oral polio vaccine strains circulate for long periods in under-immunized communities and genetically revert toward neurovirulence.

That case teaches two lessons at once. First, oral polio vaccine has rare risks in low-coverage settings, which is why high-income countries such as the United States use IPV. Second, unvaccinated people remain vulnerable when poliovirus is introduced. The lesson is not “vaccines failed.” The lesson is “vaccination coverage matters.”

How to Read “Dissolving Illusions” Critically

Readers should approach Dissolving Illusions with the same standard they would apply to any historical argument: Does it use complete data? Does it compare like with like? Does it explain counterexamples? Does it distinguish mortality from incidence? Does it acknowledge that a disease can become less deadly because of supportive care while still spreading and causing disability?

Mortality decline is not the same as disease elimination. Better hospital care can reduce deaths without stopping infection. That distinction is crucial. A child who survives polio but lives with permanent paralysis is not evidence that polio stopped mattering. Survival is better than death, obviously, but public health aims higher than “congratulations, the disease disabled you instead.”

Common Red Flags in Anti-Vaccine Historical Arguments

One red flag is the use of broad mortality graphs that end before vaccine impact becomes clear. Another is comparing diseases with very different transmission patterns as if they behaved identically. A third is emphasizing uncertainty in one area while ignoring strong evidence elsewhere. A fourth is treating every official source as suspicious while accepting fringe interpretations with the trust of a golden retriever at a barbecue.

Healthy skepticism asks for better evidence. Unhealthy skepticism keeps moving the goalposts until no evidence is ever good enough.

The Balanced View: Public Health Was a Team Sport

It is fair to say that vaccines were not the only reason human health improved. Nutrition, sanitation, antibiotics, safer births, cleaner milk, better housing, improved surveillance, and modern medical care all mattered. But the fact that many things improved public health does not mean every intervention contributed equally to every disease.

For polio, vaccination was decisive. Sanitation changed exposure patterns. Supportive care helped some patients survive. Surveillance helped track outbreaks. But immunity stopped the virus from causing epidemics in vaccinated populations. That is the central point.

The best public health history is not a cartoon where vaccines wear capes and sanitation twirls a villain mustache. It is more like a complicated orchestra. For polio, however, the vaccine section played the melody everyone remembers.

Experience Section: What Reviewing Polio Misinformation Teaches Readers

Reading arguments like those in Dissolving Illusions can be surprisingly emotional. Many readers do not begin with a desire to reject science. They begin with a reasonable instinct: wanting to protect themselves, their children, or their community from harm. That instinct deserves respect. The trouble begins when fear is paired with incomplete history and presented as a revelation.

A common experience when reviewing polio claims is the “wait, that chart looks convincing” moment. A graph may show infectious disease deaths declining before vaccines. At first glance, it feels like a mic drop. But then the details arrive like guests who were not invited to the party: deaths are not the same as cases, polio is not measles, sanitation affects diseases differently, diagnosis changed but did not erase paralysis, and vaccine campaigns line up with major drops in disease. Suddenly the mic drop becomes more of a pencil tap.

Another experience is realizing how much modern readers have been protected from historical memory. Most parents today have never seen a polio ward. They have not watched a child struggle in an iron lung. They have not lived through summers when swimming pools were viewed with suspicion and newspapers tracked outbreaks like storm warnings. That distance is a gift created partly by vaccination, but it also creates room for doubt. When a disease disappears, the prevention starts looking unnecessary. It is the public health version of canceling your roof repair because your living room is currently dry.

Writers and editors reviewing this topic also learn the importance of humility. Vaccine history includes mistakes, including the Cutter incident. Public health institutions have not always communicated perfectly. But acknowledging mistakes is different from rewriting the entire story. The honest lesson is that science improved through investigation, regulation, transparency, and better systems. The dishonest lesson is that one tragedy cancels decades of evidence.

Perhaps the most valuable experience is learning to ask better questions. Instead of asking, “Can I find a chart that supports my suspicion?” ask, “What would I expect to see if vaccines worked?” You would expect disease to fall after vaccination. You would expect outbreaks to cluster where immunity is low. You would expect high-coverage communities to be protected. You would expect imported or vaccine-derived polioviruses to threaten unvaccinated people first. That is exactly the pattern public health has observed.

For anyone writing about this subject, the goal should not be to shame hesitant readers. Shame rarely changes minds; it usually builds bunkers. The better approach is to be clear, specific, and patient. Polio history is not simple, but it is understandable. Once the full picture is visible, the conclusion is difficult to avoid: Dissolving Illusions raises attention-grabbing claims, but its polio argument dissolves under careful review.

Conclusion: The Real Illusion Is the Anti-Vaccine Shortcut

Dissolving Illusions invites readers to believe that the standard history of polio vaccination is a convenient myth. But the deeper illusion is the idea that a complex public health victory can be explained away with selective graphs, toxin theories, and diagnostic suspicion. Polio was a viral disease that caused paralysis and death. Sanitation mattered, but it did not eliminate polio. Diagnostic changes mattered, but they did not explain the disappearance of epidemic paralysis. Vaccination changed the course of the disease.

A careful review of Suzanne Humphries and Roman Bystrianyk’s claims shows that the book is strongest when reminding readers that health improvements have many causes, but weakest when it tries to minimize the role of vaccines. Polio history is not perfect, tidy, or free from tragedy. It is, however, clear on one essential point: immunization transformed polio from a feared American epidemic into a preventable disease kept at bay by continued vaccination.

That is not an illusion. That is what successful public health looks like.