health care is the maintenance or improvement of health through people’s prevention, diagnosis, and treatment of disease, illness, injury, and other physical and mental impairments. Health care is given in healthcare areas linked by healthcare professionals. Doctors and physician associates are part of these healthcare professionals.
Access to different countries, communities, and individuals, which are largely influenced by social and economic conditions as well as health policies. Providing services means “the timely use of personal health services to achieve the best possible health outcomes”. 
In terms of healthcare access, factors may include financial limitations (such as insurance coverage), geographic barriers (such as additional transport costs, the possibility of taking time to pay for the work to use such services), and Individual limitations (lack of ability to communicate) include. Healthcare providers, poor health literacy, low income).  Limitations of services negatively affect the use of medical services, the efficacy of treatment and overall results (welfare, mortality rate).
Health care systems are established organizations to meet the health needs of the targeted population. care system requires a financing mechanism, a well-trained and adequately paid workforce, on which decisions and policies are based. To give reliable information and well-maintained healthcare facilities to the quality medicines. More technologies 
An efficient health care system can contribute to important parts of a country’s economy, development and industrialization. is traditionally considered as an important determinant in promoting the normal physical and mental health and welfare of people around the world. An example of this was the eradication of smallpox in the world in 1980, which was declared by WHO as the first disease in human history so that deliberately interventions could be eliminated. 
Primary care can be provided in community health centers
This includes professionals in medicine, psychology, physiotherapy, nursing, dentistry, midwifery, and allied health, along with many others such as public health practitioners, community health workers, and assistive personnel,
Primary care refers to the work of health professionals who act as the first point of consultation for all patients in the health care system. Depend on the locality, health system organization the patient may see another health care professional first, such as a pharmacist or nurse. Depending on the nature of the health condition, patients may be referred to as secondary or tertiary care.
Primary care is often used as the term for health care services. It can be used in different settings, such as Urgent care centers which provide same-day appointments or services on a walk-in basis.
areas. Physicians in this model bill patients directly for services, either on a pre-paid monthly, quarterly, or yearly basis, or the bill for each service in the office.
The World Health Organization attributes the provision of essential primary care as an integral component of an integrated primary health strategy. …
Secondary care involves acute care: a brief but critical illness, injury, or other health conditions needed for a short time. This care is often found in the emergency department of the hospital.
The term “secondary care” is sometimes used equally with “hospital care”. Some primary care services are given in hospitals. Depending on the organizations and policies of the National Health System, patients may need to look at a primary care provider for a referral before using secondary care.
In countries that work under a mixed market care system, some doctors limit their practice to secondary care by requiring patients to see primary care providers. This restriction can be levied under the terms of payment agreements in private or group health insurance schemes. In other cases, medical specialists can see patients without referrals, and patients can decide whether self-referrals are preferred.
In other countries, patient self-referral is rare for a medical specialist for secondary care because referrals before any other physician (either primary care physician or any other specialist) are considered necessary, even if money is for private insurance plans or From National Health Insurance
Allied health professionals, such as physiotherapists, respiratory therapists, occupational therapists, speech therapists, and dieticians usually work in secondary care, either through patient self-referrals or through doctor referrals.
National Hospital for Neurology and Neurosurgery in London, United Kingdom is an expert neurological hospital.
See also: Medicine
Tertiary care is typical counseling health care, which is usually in referral to inpatients and primary or secondary health professionals, in which there is a facility in which personnel and facilities for advanced medical examination and treatment, such as tertiary referral hospital 
Experimental therapy and some types of abnormal diagnoses or surgical procedures are considered quaternary care. These services are usually given in a limited number of regional or national centers.   All-round care is more prevalent in the United Kingdom. 
Home and Community Care
There are many types of interventions outside health facilities. They also include services of professionals in residential and community settings for the treatment of self-care, home care, long-term care, living with help, other types of health and social care services.
Many countries, especially in the West, are working with the aging population, so one of the priorities of the health care system is that senior citizens can be helped to lead a complete, independent life in the comfort of their homes. There is a whole part of which is necessary for day-to-day activities such as transportation and doctor appointments, and many other activities, as well as for health and well-being.There is also a need to keep a record of vaccination and immunization of all the patients. Health authorities should issue COVID Vaccination Cards for its population and for travelers.
Although they provide home care for older adults in support, family members and care workers can work to change attitude and values towards their joint efforts. This state’s situation presents a challenge to the design of ICT (Information and Communication Technology) for home care. 
many countries have begun offering programs like consumer-guided personal assistant programs so that family members Can care for loved ones Without leaving your full income [Citation needed]