" Throughout human history, we have been subjected to wave after wave of viral and bacterial plagues. The first known one was the Babylon flu epidemic around 1200 BC. The plague of Athens in 429 BC killed close to 100,000 people, the Antonine plague in the second century killed ten million, the plague of Justinian in the sixth century killed fifty million, and the Black Death of the fourteenth century took almost 200 million lives, close to half of Europe’s population. "

― Walter Isaacson , The Code Breaker: Jennifer Doudna, Gene Editing, and the Future of the Human Race