The main reason why Snow thinks that the miasma theory could explain the initial cases of John Harold and Mr. Blenkinsop in the 1848 cholera outbreak is that the air was bad during the time.
This is a result of the belief that diseases are produced due to unhealthy or polluted vapors from the earth or as a by-product of decomposed material.
This refers to the obsolete medical theory that believes that diseases were caused by bad air known as miasma.
Hence, we can see that The main reason why Snow thinks that the miasma theory could explain the initial cases of John Harold and Mr. Blenkinsop in the 1848 cholera outbreak is that the air was bad during the time.
This is a result of the belief that diseases are produced due to unhealthy or polluted vapors from the earth or as a by-product of decomposed material.
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