Typhus

• 1. Introduction

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  Typhus killed more French soldiers during Napoleon's retreat from Moscow in 1812 than Russian bullets did. That single fact captures something essential about this disease: it has shaped human history not as a footnote, but as a primary force. What is typhus, and why has it haunted armies, prisons, and refugee camps for centuries? How does a family of diseases spread through lice, fleas, and mites reach from medieval Spanish siege lines to a Los Angeles city attorney's office in 2019? Those are the questions this documentary will answer.

  Typhus, also known as typhus fever, is not a single disease but a group of related infections. The name comes from the Greek word tûphos, meaning hazy or smoky, a word the Greeks used to describe delusion. It captured something the ancients had observed: the state of mind the illness produced in those it struck.

• 2. Three Diseases, Three Vectors

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  Rickettsia prowazekii, the bacterium behind epidemic typhus, travels from person to person on body lice. That simple biological fact explains why epidemic typhus has always followed human misery: overcrowding, poor sanitation, and a lack of clean clothing create the conditions lice need to thrive.

  Scrub typhus follows a different path. Orientia tsutsugamushi, its causative agent, spreads through chiggers, the larvae of harvest mites, which pass the infection to humans or rodents. The disease is geographically concentrated: it occurs in Southeast Asia, Japan, and northern Australia.

  Murine typhus, caused by Rickettsia typhi, is carried by fleas on rats. It circulates in tropical and subtropical regions worldwide. In October 2018, an outbreak of murine typhus was identified in downtown Los Angeles, California, a reminder that this disease is not confined to the distant past or the developing world.

  Each of the three main types belongs to a broader category that also includes spotted fever, caused by the Rickettsia spotted fever group and spread by ticks. That group includes Boutonneuse fever, Rocky Mountain spotted fever, and Queensland tick typhus, among other variants.

• 3. What Typhus Does to a Body

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  Epidemic typhus begins with a sudden onset of fever and flu-like symptoms roughly one to two weeks after infection. Five to nine days after symptoms appear, a rash typically starts on the trunk and spreads outward to the extremities, eventually covering most of the body while sparing the face, palms, and soles.

  Along with the rash come the neurological signs that gave typhus its Greek name. Sensitivity to light, delirium, and in severe cases, coma mark the onset of meningoencephalitis, a dangerous inflammation of the brain and its membranes. Without treatment, the disease is often fatal.

  The American Public Health Association recommends beginning treatment on clinical findings alone, before laboratory cultures confirm the diagnosis, because waiting costs lives. Without intervention, death occurs in 10% to 60% of people infected with epidemic typhus, with those over age 50 carrying the highest risk. A study of 60 hospitalized patients found that none died when treated with doxycycline or chloramphenicol. The antibiotic doxycycline is now the standard of care.

  Scrub typhus produces its own distinctive sign: an eschar, a dark scab-like wound at the site of the mite bite. Severe cases can damage the lungs, brain, kidney, meninges, and heart.

• 4. Prison Fever and Siege Lines

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  The first reliable description of typhus appears in 1489, during the Spanish siege of Baza against the Moors in the War of Granada. The accounts recorded fever, red spots over the arms, back, and chest, and gangrenous sores with the smell of rotting flesh. During that siege, the Spaniards lost 3,000 men to enemy action, but an additional 17,000 died of typhus.

  In England, typhus became so associated with incarceration that it earned the name gaol fever. Prisoners crowded into dark, filthy cells provided ideal conditions for lice to spread the disease. In 1759, an English authority estimated that a quarter of prisoners died of gaol fever each year. The Black Assize of Exeter in 1586 was one notable outbreak in which prisoners infected members of the court. During the Lent assizes at Taunton in 1730, gaol fever killed the Lord Chief Baron, the High Sheriff, the sergeant, and hundreds of others.

  Newgate Prison in London was a chronic source of outbreaks that spilled into the general city population. In May 1750, the Lord Mayor of London, Sir Samuel Pennant, and many court personnel were fatally infected in the courtroom of the Old Bailey, which directly adjoined Newgate.

• 5. Wars, Famines, and Coffin Ships

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  Between 1618 and 1648, pestilence raged across Germany and surrounding lands during the Thirty Years' War. According to Joseph Patrick Byrne, typhus may have killed more than 10 percent of the total German population by the war's end, and disease in general accounted for 90 percent of Europe's casualties in that conflict.

  A major epidemic struck Ireland between 1816 and 1819, during the famine caused by a worldwide drop in temperatures known as the Year Without a Summer. An estimated 100,000 people died. Then, during the Great Irish Famine between 1846 and 1849, typhus returned alongside typhoid fever. Together those diseases are said to account for 400,000 deaths. The Irish typhus spread to England, where it became known as Irish fever and was noted for its virulence across all social classes, though it struck hardest among the poor.

  In Canada, the typhus epidemic of 1847 killed more than 20,000 people from 1847 to 1848. Most were Irish immigrants who had contracted the disease aboard crowded coffin ships while fleeing the Great Irish Famine. They died in fever sheds and quarantine facilities. Officials at the time neither had adequate sanitation capacity nor understood how the disease spread.

  In the United States, a typhus epidemic struck Philadelphia in 1837. The disease killed the son of Franklin Pierce, the 14th President of the United States, in Concord, New Hampshire, in 1843.

• 6. The 20th Century's Deadliest Outbreaks

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  In Serbia during World War I, over 150,000 people died of typhus on the Eastern Front alone. Fatalities among the infected generally ran between 10% and 40%, and the disease killed a significant proportion of those nursing the sick. Delousing stations and shower trains were established for troops on the Western Front, but the Eastern Front lacked such infrastructure.

  By 1922, the typhus epidemic in Soviet territory had reached its peak, with some 20 to 30 million cases recorded across Russia. During the civil war between the White and Red Armies, epidemic typhus killed 2-3 million people, many of them civilians. Poland reported roughly 4 million cases, though the country had largely contained its epidemic by 1921 through the work of public health pioneers including Helene Sparrow and Rudolf Weigl.

  Weigl, a Polish zoologist, had developed the first typhus vaccine in the interwar period. The vaccine did not prevent infection entirely but reduced mortality.

  During World War II, typhus epidemics killed those confined to prisoner-of-war camps, ghettos, and Nazi concentration camps. Among thousands of prisoners who died of typhus at concentration camps including Theresienstadt and Bergen-Belsen were Anne Frank, age 15, and her sister Margot, age 19, both killed at the latter camp.

• 7. Diagnosis, Prevention, and Modern Cases

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  Laboratory testing is the main method of diagnosis for all forms of typhus. The indirect immunofluorescence antibody test, known as IFA, is the most common approach across all types. Scrub typhus can also be diagnosed using indirect immunoperoxidase assays. Epidemic typhus and murine typhus can additionally be tested through immunohistochemistry or polymerase chain reaction, methods that do not work for scrub typhus.

  As of 2025, no vaccine against any form of typhus is commercially available. A scrub typhus vaccine is in development. Prevention relies instead on reducing exposure to the insects that carry the disease: treating clothing with permethrin, using insect repellent, avoiding infested areas, and keeping pets free of fleas.

  According to the World Health Organization, the death rate from typhus in 2010 was about one in every 5,000,000 people per year. Epidemic typhus, once a continent-shaper, now persists in only a few areas: parts of Burundi, Rwanda, Ethiopia, Algeria, and regions of South and Central America.

  In the United States, the Centers for Disease Control and Prevention documented only 47 cases of sylvatic-cycle epidemic typhus from 1976 to 2010. An examination of a cluster of cases in Pennsylvania traced the source to flying squirrels. Murine typhus, however, has seen rising case counts, reaching 171 cases in 2022. In 2019, Los Angeles city attorney Elizabeth Greenwood disclosed that she had been infected with typhus from a flea bite at her office in Los Angeles City Hall.