Archaeology
Red squirrels spread leprosy during medieval period
A study of archaeological sites in Winchester, England, has revealed that red squirrels served as a host for Mycobacterium leprae strains that caused leprosy in people.
Leprosy is one of the oldest recorded diseases in human history and is still prevalent to this day in Asia, Africa, and South America.
It has previously been suggested that the extensive trade of red squirrel fur, greatly valued during medieval times, could have contributed to the leprosy epidemic in medieval Europe.
The results of the study, published in the journal Current Biology, studied 25 human and 12 squirrel samples from two medieval sites in Winchester.
During this period, the city had strong connections to the fur trade and housed the leprosarium, a hospital that treated people with Hansen’s disease (leprosy) caused by Mycobacterium leprae bacteria.
Verena Schuenemann of the University of Basel in Switzerland, said: “With our genetic analysis we were able to identify red squirrels as the first ancient animal host of leprosy.”
The study found that the medieval red squirrel strains were more closely related to human strains in Winchester, rather than to modern squirrel strains from England – suggesting an independent circulation of Mycobacterium leprae strains.
“Our findings highlight the importance of involving archaeological material, in particular animal remains, into studying the long-term zoonotic potential of this disease, as only a direct comparison of ancient human and animal strains allows reconstructions of potential transmission events across time,” says Sarah Inskip of the University of Leicester, UK, a co-author on the study.
Header Image Credit : Shutterstock
Sources : Current Biology, Urban, Blom, and Avanzi et al.: “Ancient Mycobacterium leprae genome reveals medieval English red squirrels as animal leprosy host.” https://www.cell.com/current-biology/fulltext/S0960-9822(24)00446-9
This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily
A groundbreaking study, published in the journal Communications Earth & Environment, has revealed why the largest concentration of pyramids in Egypt were built along a narrow desert strip.
Since the beginning of the Pharaonic era, the Nile River has played a fundamental role in the rapid growth and expansion of the Egyptian civilisation.
The Nile provided sustenance and functioned as the primary mode of transportation for goods and building materials, which explains why most of the main cities of the Egyptian civilisation were built in close proximity to the banks of the Nile and its peripheral branches.
Over the centuries, the primary channel of the Nile shifted laterally, causing these peripheral branches to silt up. As a result, population centres were cut off from the vital resources the river provided.
Image Credit : Eman Ghoneim et al
This is apparent with the pyramids along the Western Desert Plateau, where a majority of the pyramids are concentrated along a narrow desert strip several kilometres from the current primary channel of the Nile.
Using a combination of radar satellite imagery, geophysical data, and deep soil coring, the study has investigated the subsurface structure and sedimentology in the Nile Valley adjacent to the pyramid clusters.
This has revealed an extinct branch of the primary channel called the Ahramat Branch, which was connected to the pyramids of the Old and Middle Kingdoms via causeways and their Valley Temples.
According to the study authors: “The Ahramat Branch played a role in the monuments’ construction and was simultaneously active and used as a transportation waterway for workmen and building materials to the pyramids’ sites.”
The eastward migration and abandonment of the Ahramat Branch could be attributed to gradual movement of the river to the lower-lying adjacent floodplain or tilting of the Nile floodplain toward the northeast as a result of tectonic activity, as well as windblown sand incursion due to the branch’s proximity to the Western Desert Plateau.
Header Image Credit : Eman Ghoneim et al
Sources : Ghoneim, E., Ralph, T.J., Onstine, S. et al. The Egyptian pyramid chain was built along the now abandoned Ahramat Nile Branch. Commun Earth Environ 5, 233 (2024). https://doi.org/10.1038/s43247-024-01379-7
This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily
Archaeologists from the National Institute of Cultural Heritage have uncovered a Roman villa with an indoor plunge pool during excavations at the port city of Durrës, Albania.
During antiquity, Durrës was founded by Ancient Greek colonists from Corinth and Corcyra.
The colony emerged into a major trading centre, which during the Roman period was annexed into the expanding territory of the Roman Republic following the conclusion of the Illyrian Wars.
By the 4th century, the city (named Dyrrachium), emerged as the capital of the Roman province of Epirus nova, covering the region of Ancient Epirus.
Image Credit : IKTK
Archaeologists excavating a former residential part of the ancient city have uncovered a high status Roman villa that dates from between the 1st and 4th century AD.
The villa interior contains an indoor pool, richly decorated with frescoes on the walls and mosaic flooring with tiles and inlays of marble, stone, glass and ceramics. Located adjacent to the pool are shallow square basins lined with waterproof mortar, believed to be the remains of an ancient water feature.
Within the northern area of the excavation site, archaeologists found a large brick floor from a thermae, a Roman bath, and further traces of walls from the wider complex.
In the western area, the team discovered fragments of relief stucco that was used to decorate the walls and ceilings of the villa. The reliefs depict anthropomorphic and floral motifs, further indicating the wealth of the villa inhabitants.
According to the archaeologists, the villa was destroyed by an earthquake in the 4th century, corresponding with ancient sources that describe a powerful earthquake causing buildings to collapse and the city defences to crumble.
Header Image Credit : IKTK
Sources : National Institute of Cultural Heritage
This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily
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