Health care is a public sector that organizes and provides public health protection.

It is a set of measures of a political, economic, social, legal, scientific, medical, sanitary, anti-epidemic and cultural nature aimed at preserving and strengthening the physical and mental health of every person, maintaining a healthy life and providing medical care in case of health deterioration. Special social institutions are created for this purpose.

Health systems are organizations created to meet the health needs of target populations. According to the world health organization (who), a well-functioning health system requires a funding mechanism, a well-trained and adequately paid workforce, reliable information on which to base decisions and policies, and well-maintained health facilities to deliver quality medicines and technology.

Health is an essential element of international development.An effective health system can make a significant contribution to the country's economy, development and industrialization. Health is traditionally considered an important factor in determining the overall physical and mental health and well-being of people around the world. An example of this is the worldwide eradication of smallpox in 1980, declared by who to be the first disease in human history to be completely eliminated through deliberate medical interventions.