blog posts Illinois journal highlights new findings on the Black Death's timeline, origin Oct 24, 2022 10:30 am by Jodi HeckelInsights Share on Facebook Tweet Email Images The bacterial cause of the Black Death existed millennia earlier than previously thought and is now known to have caused the First Plague Pandemic, which devastated the 6th century Roman world, says U of I medieval studies expert Carol Symes. Share on Facebook Tweet Email