Who did some christians blame for the spread of ye Black Death

The citizens of Gloucester thought that the disease must be somehow contagious and expected that by closing their gates to refugees from Bristol, they would be able to prevent its incursion. Yet, the Black Death was rarely spread from person to person by normal viral means, and when it was, it was in such a virulent form that the carrier was usually dead before they could pass the disease on to anyone outside their immediate household.