Collection of facts about the Black Death

This post is a collection of facts about the Black Death (1346-1353). There are 5 facts listed below. Source: Wikipedia

• Plague pandemic in Europe
• Spread through the air and by fleas
• 25,000,000 to 50,000,000 deaths (30-60% of Europe's population)
• Possibly introduced to Europe during Siege of Caffa in Crimea and carried back by fleas on ships sailing through the Mediterranean Sea
• Known as second plague pandemic (first was plague of Justinian in 541 - 549 AD)