「黑死病」（摘抄僅供參考）

Hand-Washing

In the 14th century, Europe was struck by the devastating "Black Plague" that is estimated to have killed one-third of the European population, or 25 million people. The Jewish community suffered proportionally fewer casualties, triggering rumors that the plague was the result of an international Jewish conspiracy to poison Christians. Tens of thousands of Jews were massacred to prevent further outbreak of the plague.

There are many theories as to the origin of the Black Plague. All agree that the outbreak was spread by lack of hygiene. It seems that the Jewish communities suffered fewer fatalities, because they maintained better hygiene……

Jews do a lot of hand washing……when……wake up, before……eat, and after……eat……wash after being in a cemetery or at a funeral……wash after using the bathroom.