Researchers are shedding light on a significant historical crisis as an interdisciplinary team from the University of South Florida investigates the Plague of Justinian and its extensive impacts. Led by Rays H. Y. Jiang, an associate professor in the College of Public Health, this group has recently published a third paper in their ongoing series, focusing on what is recognized as the first recorded outbreak of bubonic plague in the Mediterranean region.
The latest study, titled "Bioarchaeological signatures during the Plague of Justinian (541-750 CE) in Jerash, Jordan," has been featured in the Journal of Archaeological Science. This research enhances our understanding of an outbreak that claimed millions of lives across the Byzantine Empire.
"Our aim was to delve deeper than merely identifying the pathogen; we wanted to understand the individuals affected, their lifestyles, and the realities of death during a pandemic in a bustling city," Jiang explained.
A Mass Grave Uncovers the Scale of Mortality
During the peak of the Plague of Justinian, individuals from diverse and often isolated communities were united in death. A significant number of bodies were hastily interred atop pottery remnants in an abandoned public space, which became the focal point of this research.
Jiang, as the principal investigator, collaborated with colleagues from USF's Genomics, Global Health Infectious Disease Research Center, as well as departments such as anthropology, molecular medicine, and history. Contributions also came from archaeologist Karen Hendrix at Sydney University and a DNA laboratory at Florida Atlantic University. Previous research in this series primarily concentrated on Yersinia pestis, the bacterium responsible for the plague. This new investigation aims to understand the societal impacts of the disease both in the short and long term, offering insights relevant to contemporary society.
"Earlier studies identified the plague organism," Jiang noted. "The Jerash site transforms that genetic signal into a human narrative about who perished and how a city faced a crisis."
First Confirmed Plague Mass Grave
While historical records indicate widespread disease during the Byzantine period, many suspected plague burial sites lacked definitive proof. Jerash now emerges as the first confirmed location of a plague-related mass grave, validated through archaeological findings and genetic analysis.
Researchers established that the burial represented a singular event, contrasting with traditional cemeteries that develop over time. In Jerash, hundreds of individuals were interred within a matter of days, reshaping our comprehension of the First Pandemic by providing clear evidence of large-scale mortality and insights into ancient urban life.
Mobility and Hidden Connections
The findings address a long-standing question regarding migration patterns. Historical and genetic data suggest that people traveled and intermingled across regions, yet burial evidence often implies localized communities.
The Jerash site illustrates that both phenomena can coexist. Migration typically occurred gradually over generations, blending into daily life, but during crises, individuals from more mobile backgrounds congregated, revealing previously hidden connections.
Evidence indicates that those buried in Jerash belonged to a mobile population integrated into the broader urban community, uniting during a moment of crisis.
Understanding the Human Impact of Pandemics
"By connecting biological evidence from the remains to the archaeological context, we gain insights into how disease impacted real individuals within their social and environmental frameworks," Jiang stated. "This approach allows us to perceive pandemics as lived human experiences rather than mere outbreaks chronicled in history."
This research is transforming the scientific perspective on pandemics by emphasizing their effects on daily life and social structures. Just as in the past, factors such as urban density, travel, and environmental changes continue to play a crucial role today.
"Pandemics are not solely biological occurrences; they are social phenomena. This study illustrates how disease intersects with daily life, movement, and vulnerability," Jiang concluded. "Understanding these patterns can inform how societies respond to future health crises."
