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One good reason is to prevent foodborne illness.
To prevent cream (as in cream from milk) from causing foodborne illness, the cream should be pasteurized, stored refrigerated and used before it spoils. Most products using cream as an ingredient should probably be refrigerated, too.
Personal hygiene is imperative when cooking. This helps prevent foodborne illness and similar factors.
May not seem obvious, but Diarrhea and Vomiting are symptoms of foodborne illness, which is contagious. Plus, Diarrhea and Vomiting in themselves are contagious. They just want to prevent further spread of the illness.
I'm sure there are details of foodborne and waterborne illness that will be specific to Kenya and this sounds like the subject of a research paper. But foodborne illness anywhere can be improved by preventing contamination (which involves the many steps from farm to fork), proper storage to prevent pathogen growth, and proper preparation (including cooking) to remove pathogens that might have hitched a ride. One of the big factors in controlling foodborne illness in Kenya is improving water quality. Even programs encouraging the washing of hands have made improvements. See Related Links.
what precautions can be used to prevent foodborne illnesses
It is a scientific discipline which describing the handling, preparation, and storage of food in ways that prevent foodborne illness. This includes a number of routines that should be followed to avoid potentially severe health hazards.
To prevent spreading illness through contaminated food.
yes
you can't
The single most effective way to prevent illness is washing your hands with regular soap for 20 seconds, scrubbing required. (Scrubbing=friction)
Food safety helps prevent the spread of germs and bacteria on food, decreasing the risk of foodborne illnesses.