Two of the world’s deadliest pandemics – Justinian’s Plague and the Black Death – were caused by the same pathogen. These findings were revealed yesterday in an article published in the journal Lancet Infectious Diseases.

The researchers, who include scientists from McMaster University in Canada, the University of Sydney and Northern Arizona University, were able to gather minuscule plague DNA fragments from the 1,500-year-old teeth of two victims of Justinian’s plague, buried in Bavaria, Germany.

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