Answer: One reason was because there was a general sense of anti-Semitism in the 14th century. Jews were also isolated in the ghettos, which meant in some places that Jews were less affected. Additionally, there are many Jewish laws that promote cleanliness: a Jew must wash his or her hands before eating bread and after using the bathroom, it was customary for Jews to bathe once a week before the Sabbath.
Explanation: I think
