Every age has had its emerging infectious diseases. Microbes and the diseases they cause are organized here by the era that they first emerged as a major threat to human populations. Some of them like malaria have been major pathogens since they emerged in the depths of Antiquity (or before). Others have come and gone, and some are still in their first emergence. All of them are interesting for our understanding of history and are still relevant for our future.
Paleomicrobiology & Epidemiology
- Old Germs, or Paleomicrobiology
- Tools of Paleomicrobiology
- Hunting Pathogens in Siberian Permafrost Graves
- Ancient Remnants: Biomolecules in Paleomicrobiology (non-nucleic acid)
- The Unnatural History of Emerging Infections (book review)
- Syndemics and Historic Diseases
- Challenging Virgin Soil Epidemic Assumptions
Antiquity (before c. 400 AD/CE)
Varicella-Zoster Virus (chicken pox and shingles)
Anthrax
Malaria (Plasmodium species)
- Malaria and the Boy Pharaoh
- Benjamin Rush on Malaria in Pennsylvania, 1785
- A Reversal of Seasons
- Mapping Malaria, Smallpox, and Leprosy
- Dr. Seuss Does Malaria
- Mapping Malaria in Anglo-Saxon England
- Malaria Near the Arctic Circle
- The Paleomicrobiology of Malaria Detection
- Plasmodium knowlesi: A New Ancient Malaria Parasite
Leprosy (Mycobacterium leprae, before 2000 BCE)
Lyme Disease (Borrelia burgdorferi, 5300 BP)
Trench Fever (Bartonella quintana, 4000 BP)
- Detecting pathogens in medieval Venice
- Trench Fever and Plague in 14th Century France
- Lice, Ancient DNA, and Napoleon’s Grand Army
- Trench Fever in German Mass Burial
- Trench fever: An Ancient Zoonosis
Tuberculosis (Mycobacterium tuberculosis)
Smallpox
- Lincoln’s Illness at Gettysburg
- Mapping Malaria, Smallpox and Leprosy
- Siberian Mummy Yields 300-year-old Smallpox DNA
- Evolutionary Clues in 17th Century Smallpox Genome
Medieval (c. 400-1400 AD/CE)

The Plague (Yersinia pestis, first pandemic 541 AD/CE)
- See the Plague page here at Contagions!
- Plague DNA from Late Antique Bavaria
- The Vampire in the Plague Pit
- Plague in 18th century Egypt
- Detecting pathogens in medieval Venice
- DNA of the Black Death from East Smithfield, London
- Keeping Bronze Age Yersinia pestis in Perspective
Yellow Fever (6th – 13th century)
Measles (11th-12th century)
Modern (1400-present)

Influenza (first pandemic 1510)
- Influenza Pandemics: 1510-2010
- Epidemiology of the Russian Flu, 1889-1890
- Insights into the Pathogenesis of the Spanish Flu
- Defining pandemic
- Illustrations of the 1896-1897 Influenza Epidemic in Paris
Cholera (Vibrio cholerae, first pandemic 1832)
- Cholera in Illinois’ American Bottoms Region, 1849
- Clonal Origins of Haiti’s Cholera Epidemic
- Cradle of Cholera’s Seventh Pandemic Found
- Cholera’s Chain of Infection
- Historic Meanings of “Cholera”
- Personal ties to Cholera, 1833