People of the middle ages believed that humans were infected with diseases because of

A:Poor infrastracture and sanitation

B: Poor Hygeine

C: Sins they had comitted

D:A & B

Answer: D

Explanation: King Henry's affliction was commonplace in medieval times, and lice were ... A lack of hygiene amongst medieval people led to horrific skin complaints. Poor people washed in cold water, without soap, so this did little to prevent infection ... skin diseases were generally classed as leprosy and indeed leprosy