Health care or healthcare is the treatment and prevention of illness. Health care is delivered by professionals in medicine, dentistry, nursing, pharmacy and allied health.
The health-care industry incorporates several sectors that are dedicated to providing health care services and products. According to industry and market classifications, such as the Global Industry Classification Standard and the Industry Classification Benchmark, the health-care industry includes health care equipment and services as well as pharmaceuticals, biotechnology and life sciences. The particular sectors associated with these groups are: biotechnology, diagnostic substances, drug delivery, drug manufacturers, hospitals, medical equipment and instruments, diagnostic laboratories, nursing homes, providers of health care plans and home health care.
http://en.wikipedia.org/wiki/Health_care
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