题目内容

Public health can mean vaccinating children and adults to prevent the spread of _________.

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Public health works to track disease outbreaks, prevent injuries and shed light on why some of us are more likely to suffer from _______ health than others.

Themanyfacetsofpublichealthincludespeakingoutforlawsthatpromotesmoke-freeindoorairandseatbelts,spreadingthewordaboutwaystostayhealthyandgivingscience-based __________ toproblems.

Noxious agents can be introduced into the environment through farming, fertilizers, inadequate sewage disposal and drainage, construction, defective heating and ventilating systems, machinery, and _______________.

The practice of public health draws heavily on medical science and philosophy and concentrates especially on manipulating and controlling the ________________ for the benefit of the public.