一个国家的医疗卫生包括该国家内所有保障和提高国家人民的健康、治疗疾病和受伤的人员、组织、系统、规则和过程。

医疗卫生有5个最主要的目的：对所有人开放、质量、效应、经济性及病人和工作人员的满意。

Health care or healthcare is the maintenance or improvement of health via the diagnosis, treatment, and prevention of disease, illness, injury, and other physical and mental impairments in human beings. Health care is delivered by health professionals (providers or practitioners) in allied health professions, chiropractic, physicians, physician associates, dentistry, midwifery, nursing, medicine, optometry, pharmacy, psychology, and other health professions. It includes the work done in providing primary care, secondary care, and tertiary care, as well as in public health.