The Plague of Cyprian Spreads Through a Crumbling Empire
A still-unidentified disease kills thousands a day in Rome while a Carthaginian bishop writes the first Christian account of an epidemic
Quick facts
- Pathogen
- Unidentified; smallpox, measles, and viral hemorrhagic fever proposed
- Primary source
- Cyprian of Carthage, On Mortality (De Mortalitate)
- Duration
- About 249 to 262 CE, with recurrences to 270
- Peak reported toll
- Up to 5,000 deaths a day in Rome at its height
- Notable deaths
- Emperors Hostilian (251) and Claudius II Gothicus (270)
What happened
A new epidemic appeared around Easter of 249 or 250 CE, first recorded in Egypt in the letters of Bishop Dionysius of Alexandria, then spreading across the Mediterranean and reaching Rome by 251. At its height the disease reportedly killed as many as 5,000 people a day in the city. Cyprian, the bishop of Carthage, recorded the symptoms in his treatise On Mortality: diarrhea, continuous vomiting, fever, deafness, blindness, paralysis of the legs and feet, swollen throats, and eyes filled with blood. Two emperors, Hostilian in 251 and Claudius II Gothicus in 270, are recorded as having died of it. The outbreak recurred in waves for roughly two decades.
Why it matters
The plague struck during the Crisis of the Third Century, a period of civil war, currency collapse, and invasion, and modern historians such as Kyle Harper argue it deepened the empire's manpower and agricultural shortages at the worst possible moment. It also gave the still-marginal Christian church a public role: Cyprian organized care for the sick and burial for the dead when Roman civic authorities offered little, a service historians credit with helping the church's later growth.
How we know
Cyprian's own treatise is the fullest surviving eyewitness account. Attempts to extract ancient DNA from Egyptian burials associated with the outbreak have failed because of poor preservation in that climate, so unlike the Plague of Justinian three centuries later, no pathogen has been confirmed; smallpox, measles, and viral hemorrhagic fever are all proposed candidates.
Sources
- World History Encyclopedia. Plague of Cyprian, 250-270 CE · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- World History Encyclopedia. Plague of Cyprian · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
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