Antonine Plague
Also known as: Plague of Galen
Overview
The Antonine Plague struck the Roman Empire between 165 and 180 CE, during the reigns of co-emperors Marcus Aurelius and Lucius Verus. Returning Roman legions from Mesopotamia are believed to have carried the pathogen back to the empire, where it spread through military camps, trade networks, and major cities. The Greek physician Galen described the symptoms — fever, diarrhoea, and a characteristic black pustular rash — which most modern scholars identify as smallpox.
Estimates of mortality vary widely. Some historians place peak-era deaths at 2,000 per day in Rome alone and cumulative deaths at 10% of the empire's population, or around 5–10 million. The pandemic recurred in waves: the 165–180 outbreak was followed by the Plague of Cyprian (249–262), which some scholars consider a separate but related event.
The Antonine Plague occurred at a high point of Roman power and is often cited as a contributing cause of the empire's subsequent military and economic difficulties, though its role relative to other factors is debated.
Timeline
- 165Roman legions returning from the Parthian War bring disease to the empire.
- 166Epidemic reaches Rome; emperor Lucius Verus possibly dies of it in 169.
- 167–172Spreads through Gaul and along the Rhine frontier; disrupts Marcus Aurelius's Marcomannic Wars.
- 180Marcus Aurelius dies in Vindobona (Vienna), possibly from the disease; official end.
- 249–262Related Plague of Cyprian occurs; some historians treat it as a second wave.
Impact
The plague arrived at a period of imperial stability and is often invoked as the end of the Pax Romana prosperity. It disrupted military recruitment, tax collection, and the grain supply. Galen's surviving descriptions made it one of the best-documented ancient pandemics, and his observations influenced Western medical thought for over a thousand years. Estimated mortality (1,500–2,000 daily in Rome alone during the peak) probably contributed to rising inflation, labour shortages, and barbarian incursions across weakly-manned frontiers.
How it ended
The epidemic subsided after roughly 15 years, likely because surviving populations had acquired immunity and the disease exhausted susceptible hosts. Smallpox continued as an endemic disease in Europe until the 20th century.
Notable people who died of antonine plague
Identified from HistoryData's person database by cause-of-death field. Coverage depends on enrichment completeness.
Sources
- Harper, Kyle (2017). The Fate of Rome.
- Flemming, Rebecca (2019). 'Galen and the Plague.' Oxford Handbook of the Antonine Plague.
- Duncan-Jones, Richard (1996). 'The Impact of the Antonine Plague.' Journal of Roman Archaeology.