A person has a very high fever and is delirious.  They are ranting and raving, and throwing themselves about on the bed in fits.  To which of these theories of disease would these symptoms have been attributed in the 17th century?

Before steps for flocculation and sedimentation are used, water is filtered

The Boonton Reservoir was chlorinated in September 1908.

How was water quality determined in early civilizations?

The multiple tube fermentation technique is being replaced in most labs by the membrane filter method.

Special vegetable washes are needed to properly wash a melon

The most common cause of hand, foot, and mouth disease (HFMD) in the US is

Secondary treatment of wastewater begins with the addition of chlorine to destroy the majority of microbes in the water.

Annual cases  of Entamoeba histolytica worldwide range from 5-10,000

Pasteur used heat to destroy microorganisms causing spoilage based on the experiments of Nicolas Appert, who developed canning.