Prevention of Infection and Spoilage of Food

The video discusses harmful micro-organisms known as pathogens, which cause diseases in humans, animals, and plants. It covers various diseases caused by viruses, bacteria, protozoa, and fungi. The concept of communicable diseases, which spread through air, water, and carriers like flies and mosquitoes, is explained. The video also touches on ancient preservation techniques used by Egyptians to prevent decay by depriving bacteria of necessary conditions.

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