Disease and epidemic

The transcript describes the cholera epidemic of 1853 and Dr. John Snow's investigation into its cause. Initially, people believed cholera was spread through foul air, known as miasma. However, Dr. Snow suspected contaminated water was the source. He interviewed locals about their water sources and found a correlation between the local pump and cholera cases. Despite efforts to clean the air, cholera persisted until Dr. Snow removed the pump handle, forcing people to use other water sources, which stopped the outbreak. This confirmed his theory that cholera was waterborne.

What was the general belief about the cause of cholera before Dr. Snow's investigation?

What was the outcome after Dr. Snow removed the handle from the water pump?