What piece of scientific knowledge was Semmelweis missing to explain his
discovery?
The hygiene hypothesis
Pastuerization theory
The germ theory of disease

the germ theory of disease

The germ theory of disease.

Explanation:

Ignaz Philipp Semmelweis is widely credited with the invention of the use of antiseptics in the reduction of puerperal fever in clinics.

However, the piece of scientific knowledge that he was missing to explain his discovery was the germ theory of disease.

disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.

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