
If you’ve heard of hepatitis, you probably know it has something to do with the liver. But there’s a whole family of hepatitis viruses, each with its own personality when it comes to how it spreads, what it does to your body, and how we can prevent or treat it. Let’s walk through the three most common types—hepatitis A, B, and C—and then dive into a controversy that’s making headlines right now: the hepatitis B vaccine.
What Is Hepatitis, Anyway?
At its core, hepatitis just means inflammation of the liver. Your liver is a workhorse organ that filters toxins, produces essential proteins like albumin, processes amino acids, and stores energy. When a hepatitis virus attacks it, the inflammation can range from a minor inconvenience to a life-threatening condition. The three main culprits—hepatitis A, B, and C viruses—are completely different organisms that just happen to target the same organ.
Hepatitis A: The Food and Water Troublemaker
Hepatitis A is often called “traveler’s hepatitis” because it spreads through food and water that are contaminated with fecal matter. Think of it as the virus you might pick up from eating unwashed produce, drinking contaminated water, or consuming raw shellfish from polluted waters. Other risk factors include unprotected sex and IV drug use. According to the CDC, there were an estimated 3,300 acute infections in 2023 in the United States.
The good news about hepatitis A is that it typically heals itself within 2 months. When symptoms appear—which take about 15 to 50 days after infection—they can include jaundice (that yellowing of the skin and eyes), fever, fatigue, nausea, and dark urine. Many young children don’t show any symptoms at all. The virus doesn’t become chronic, and once you’ve had it, your body produces antibodies that protect you for life.
Prevention is straightforward: there’s a safe and effective vaccine, and basic hygiene goes a long way. Wash your hands thoroughly, especially after using the bathroom and before preparing food. When traveling to areas with questionable water quality, stick to bottled or boiled water and avoid washing raw food in local water.
Treatment is mostly supportive—rest, fluids, and time. Your liver does the healing work itself.
Hepatitis B: The Blood and Body Fluid Virus
Hepatitis B is where things get more serious. This virus spreads through blood and other body fluids, which means it can be transmitted through sexual contact, sharing needles, or from mother to baby during childbirth. Healthcare workers are especially at risk from needle sticks and sharps injuries. It’s a highly infectious and tough virus that can live on surfaces for up to a week. Even tiny amounts of dried blood on seemingly innocent things like razors, nail clippers, or toothbrushes can potentially spread the infection.
According to the CDC, there were an estimated 14,400 acute infections in 2023, Approximately 640,000 adults were living with chronic hepatitis B during the 2017-2020 period and that’s what makes it particularly concerning: while the hepatitis B virus often causes short-term illness, it can become chronic.
The incubation period is long—typically 90 days with a range of 60 to 150 days. When symptoms do appear, they mirror hepatitis A: jaundice, fatigue, abdominal pain, nausea, and dark urine. But here’s the frightening part: most young children and many adults show no symptoms at all, meaning they can spread the virus without knowing they’re infected.
The chronic infection risk varies dramatically by age. If you’re infected as a newborn, you have a 90% chance of developing chronic hepatitis B. For adults, the risk drops to under 5%. Those with chronic infection face serious long-term consequences—15% to 25% of people with chronic infection develop serious liver disease, including cirrhosis, liver failure, or liver cancer.
Treatment for acute hepatitis B is supportive, but several antiviral medications are available for people with chronic infection. These don’t completely eradicate the disease but produce a “functional cure” that significantly slows liver damage and reduces complications.
Prevention is critical. There’s a highly effective vaccine—we’ll talk more about the controversy surrounding it in a moment. Avoiding exposure to infected blood and body fluids is essential. This means safe sex practices, never sharing needles or personal care items that might have blood on them, and ensuring proper sterilization of medical and tattooing equipment.
Hepatitis C: The Silent Epidemic
Hepatitis C is transmitted primarily through blood-to-blood contact. The most common route is sharing needles among people who inject drugs, though it can also spread through contaminated medical equipment, and rarely through sexual contact. Mother-to-child transmission during childbirth is possible but uncommon. Screening of blood products has made transfusion related infections rare. About 10% of cases have no identified source.
What makes hepatitis C insidious is its stealthy nature. Many people with hepatitis C don’t have symptoms, and acute hepatitis with jaundice is rare, occurring in only about 10% of infections. The symptoms that do appear—fatigue, mild flu-like feelings—are easily dismissed. Meanwhile, the majority of people (60-70%) develop chronic infection. I recommend a screening blood test at least once for all adults over age 55, as they are the group most likely to have hepatitis C without an identifiable source.
The incubation period ranges widely, from 2 weeks to 6 months, typically 6 to 9 weeks. Without treatment, chronic hepatitis C can lead to cirrhosis and liver cancer over decades. Before modern treatments, it was a leading cause of liver transplants.
Treatment for hepatitis C has undergone a revolution. The old approach—interferon injections combined with ribavirin—had terrible side effects and worked in only about half of patients. Today, we have direct-acting antivirals (DAAs), which can cure more than 95% of cases with just 8-12 weeks of well-tolerated oral medication. These drugs target specific proteins the virus needs to replicate, essentially starving it out of existence. The treatment is so effective that hepatitis C is now considered a curable disease.
Prevention focuses on avoiding blood-to-blood contact. Never share needles, syringes, or any drug equipment. If you’re getting a tattoo or piercing, ensure the facility follows proper sterilization procedures. Healthcare workers should follow standard precautions with blood and body fluids. Unfortunately, there’s no vaccine for hepatitis C yet, though researchers continue working on one.
The Hepatitis B Vaccine Controversy: What’s Really Happening
Now let’s address the elephant in the room—the recent controversy over the hepatitis B vaccine for newborns. This topic exploded in the news in December 2025, and it’s worth understanding what’s currently going on versus what the science says.
The Recent Development
On December 5, 2025, the CDC’s Advisory Committee on Immunization Practices (ACIP) voted 8-3 to recommend hepatitis B vaccination at birth only for infants born to mothers who test positive for the virus or whose status is unknown. This reverses decades of policy that recommended universal hepatitis B vaccination for all newborns within 24 hours of birth.
The Arguments For Changing the Policy
Some ACIP members raised concerns about vaccine safety and parental hesitancy. Committee member Retsef Levi heralded the move as “a fundamental change in the approach to this vaccine,” which would encourage parents to “carefully think about whether they want to take the risk of giving another vaccine to their child”. The controversy includes historical concerns about possible links between the hepatitis B vaccine and conditions like multiple sclerosis, autism, and other autoimmune disorders.
What Science Actually Shows
The evidence on vaccine safety is quite robust. Concerns about multiple sclerosis emerged in France in the 1990s. Since then, a large body of scientific evidence shows that hepatitis B vaccination does not cause or worsen MS. The World Health Organization’s Global Advisory Committee on Vaccine Safety has concluded there is no association between the hepatitis B vaccine and MS. It is one of the safest vaccines studied.
As for other safety concerns, CDC reviewed VAERS reports from 2005-2015 and found no new or unexpected safety concerns. The most common side effects are minor: soreness at the injection site, headache, and fatigue lasting 1-2 days.
Why the Universal Birth Dose Matters
The scientific and medical communities have strongly opposed this policy change. The American Academy of Pediatrics states that from 2011-2019, rates of reported acute hepatitis B remained low among children and adolescents, likely explained in part by the implementation of childhood hepatitis B vaccine recommendations published in 1991.
Here’s why newborns are so vulnerable: infected infants have a 90% chance of developing chronic hepatitis B, and a quarter of those will die prematurely from liver disease when they become adults.
The “just target high-risk babies” approach has a major flaw: the CDC estimates about 640,000 adults have chronic hepatitis B, but about half don’t know they’re infected. Before universal vaccination, about half of infected children under 10 got it from their mothers—the rest contracted it through other exposures not identified by maternal screening.
The Global Context
Claims that the U.S. is an outlier don’t hold up. As of September 2025, 116 of 194 WHO member states recommend universal hepatitis B birth dose vaccination. European countries that do not recommend a universal birth dose have a much lower hepatitis B incidence rate and more robust antenatal maternal screening. The majority still recommend vaccination at two to three months.
The Bottom Line
All three types of hepatitis pose serious health risks, but we have powerful tools to prevent and treat them. Hepatitis A and B have safe, effective vaccines that have dramatically reduced disease rates. Hepatitis C, while lacking a vaccine, is now curable with modern antiviral medications.
The hepatitis B vaccine controversy highlights a broader tension in public health: balancing individual autonomy with community protection. The scientific evidence strongly supports the vaccine’s safety and the effectiveness of universal newborn vaccination in preventing a disease that can be fatal. Multiple studies, decades of safety data, and recommendations from medical organizations worldwide back this up.
For parents making decisions about their newborns, the facts are these: hepatitis B is a serious disease with a high risk of becoming chronic in infants, the vaccine is highly effective at preventing infection, and extensive safety monitoring has found it to be safe with only minor, temporary side effects. As hepatitis research continues, we’re seeing remarkable progress—from the near-eradication of hepatitis A in vaccinated populations to the transformation of hepatitis C from a chronic, often fatal disease to a curable one. These advances remind us how far we’ve come in understanding and combating these liver viruses.
Sources
- Centers for Disease Control and Prevention (https://www.cdc.gov)
- World Health Organization (https://www.who.int)
- Cleveland Clinic (https://my.clevelandclinic.org)
- National Center for Biotechnology Information (https://www.ncbi.nlm.nih.gov)
- American Academy of Pediatrics (https://www.aap.org)
- PBS NewsHour (https://www.pbs.org)
- FactCheck.org (https://www.factcheck.org)
- Government of Quebec (https://www.quebec.ca/en/health/health-issues/stbbis/hepatitis-a-b-and-c)















The Strange Tale of Spontaneous Human Combustion
By John Turley
On January 19, 2026
In Commentary, History
Did you ever run into an idea so strange that you can’t quite understand how anyone ever took it seriously? Recently, while reading about historical curiosities in Pseudoscience by Kang and Pederson, I was reminded of one of the most enduring examples: spontaneous human combustion.
The classic image is always the same. Someone enters a room and finds a small pile of ashes where a person once sat. The body is nearly destroyed, yet the chair beneath it is barely scorched and the rest of the room looks strangely untouched. For centuries, this baffling scene was explained by a dramatic idea—that a person could suddenly burst into flames from the inside, without any external fire at all.
It sounds like something lifted straight from a gothic novel, but belief in spontaneous human combustion stretches back to at least the seventeenth century and reached its peak in the Victorian era. To understand why it gained such traction, it helps to look at the social attitudes of the time, the cases that convinced people it was real, and what modern forensic science eventually uncovered.
Much of the early belief rested on moral judgment rather than evidence. In the nineteenth century, spontaneous human combustion was widely accepted as a kind of divine punishment. Many of the alleged victims were described as heavy drinkers, often elderly, overweight, or socially isolated, and women were frequently overrepresented in the reports. To Victorian minds, this pattern felt meaningful. Alcohol was flammable, after all, and it seemed reasonable—at least then—to assume that a body saturated with spirits might somehow ignite. Sensational newspaper reporting amplified the mystery, presenting lurid details while glossing over inconvenient facts.
The idea gained intellectual credibility in 1746 when Paul Rolli, a Fellow of the Royal Society, formally used the term “spontaneous human combustion” while describing the death of Countess Cornelia Zangari Bandi. The involvement of a respected scientific figure gave the concept legitimacy that lingered for generations.
Several cases became canonical. Countess Bandi’s death in 1731 was described as leaving little more than ashes and partially intact legs, still clothed in stockings. In 1966, John Irving Bentley of Pennsylvania was found almost completely burned except for one leg, with his pipe discovered intact nearby. Mary Reeser, known as the “Cinder Woman,” died in Florida in 1951, leaving behind melted fat embedded in the rug near where she had been sitting. As recently as 2010, an Irish coroner ruled that spontaneous human combustion caused the death of Michael Faherty, whose body was found badly burned near a fireplace in a room that showed little fire damage. Over roughly three centuries, about two hundred such cases have been cited worldwide.
Believers proposed explanations that ranged from the scientific-sounding to the overtly theological. Alcoholism was the most popular theory, with some physicians genuinely arguing that chronic drinking made the human body combustible. Earlier medical thinking leaned on imbalances of bodily humors, while later writers speculated about unknown chemical reactions producing internal heat. Religious interpretations framed these deaths as punishment for sin. Even in modern times, a few proponents have suggested that acetone buildup in people with alcoholism, diabetes, or extreme diets could somehow trigger combustion.
The idea was so culturally embedded that Charles Dickens famously killed off the alcoholic character Mr. Krook by spontaneous combustion in Bleak House. When critics objected, Dickens defended the plot choice by citing what he believed were credible historical and medical sources.
The illusion of the supernatural persisted because the circumstances were almost perfectly misleading. Victims were typically alone, elderly, or physically impaired, unable to respond quickly to a smoldering fire. The localized damage looked impossible to the untrained eye. Potential ignition sources were often destroyed in the fire itself. And dramatic storytelling filled in the gaps left by incomplete investigations.
What actually happens in these cases is far less mystical and far more unsettling. Modern forensic science points to an explanation known as the “wick effect.” In this scenario, there is always an external ignition source—often a cigarette, candle, lamp, or fireplace ember. Once clothing catches fire, heat melts the person’s body fat. That liquefied fat soaks into the clothing, which then behaves like a candle wick. The fire burns slowly and steadily, sometimes for hours, consuming much of the body while leaving nearby objects relatively unscathed.
This effect has been demonstrated experimentally. In the 1960s, researchers at Leeds University showed that cloth soaked in human fat could sustain a slow burn for extended periods once ignited. In 1998, forensic scientist John de Haan famously replicated the effect for the BBC by burning a pig carcass wrapped in a blanket. The result closely matched classic spontaneous combustion scenes: severe destruction of the body, with extremities left behind and limited damage to the surrounding room.
The reason these fires don’t usually engulf the entire space is simple physics. Flames rise more easily than they spread sideways, and the heat output of a wick-effect fire is relatively localized. It’s similar to standing near a campfire—you can be close without catching fire yourself.
Investigators Joe Nickell and John F. Fischer examined dozens of historical cases and found that every one involved a plausible ignition source, details that earlier accounts often ignored or downplayed. When these factors are restored to the narrative, the mystery largely disappears.
As science writer Benjamin Radford has pointed out, if spontaneous human combustion were truly spontaneous, we would expect it to occur randomly and frequently, in public places as well as private ones. Instead, it consistently appears in situations involving isolation and an external heat source.
The bottom line is straightforward. There is no credible scientific evidence that humans can burst into flames without an external ignition source. What has been labeled spontaneous human combustion is better understood as a tragic combination of accidental fire and the wick effect. The myth endured because it blended moral judgment, fear, and incomplete science into a compelling story. Today, forensic investigation has replaced superstition with explanation, even if the results remain unsettling.
Spontaneous human combustion survives as a reminder of how easily mystery fills the space where evidence is thin—and how patiently applied science eventually closes that gap.
Sources and Further Reading
Peer-reviewed forensic and medical analyses are available through the National Center for Biotechnology Information, including “So-called Spontaneous Human Combustion” in the Journal of Forensic Sciences (https://pubmed.ncbi.nlm.nih.gov/21392004/) and Koljonen and Kluger’s 2012 review, “Spontaneous human combustion in the light of the 21st century,” published in the Journal of Burn Care & Research (https://pubmed.ncbi.nlm.nih.gov/22269823/).
General scientific and historical overviews can be found in Encyclopædia Britannica’s article “Is Spontaneous Human Combustion Real?” (https://www.britannica.com/story/is-spontaneous-human-combustion-real), Scientific American’s discussion of the wick effect (https://www.scientificamerican.com/blog/cocktail-party-physics/burn-baby-burn-understanding-the-wick-effect/), and Live Science’s summary of facts and theories (https://www.livescience.com/42080-spontaneous-human-combustion.html).
Accessible explanatory pieces are also available from HowStuffWorks (https://science.howstuffworks.com/science-vs-myth/unexplained-phenomena/shc.htm), History.com (https://www.history.com/articles/is-spontaneous-human-combustion-real), Mental Floss (https://www.mentalfloss.com/article/22236/quick-7-seven-cases-spontaneous-human-combustion), and All That’s Interesting (https://allthatsinteresting.com/spontaneous-human-combustion). Wikipedia’s entries on spontaneous human combustion and the wick effect provide comprehensive background and references at https://en.wikipedia.org/wiki/Spontaneous_human_combustion and https://en.wikipedia.org/wiki/Wick_effect.