What is Vaccine?A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins. The agent stimulates the body's immune system to recognize the agent as a threat, destroy it, and to further recognize and destroy any of the microorganisms associated with that agent that it may encounter in the future. The administration of vaccines is called vaccination. Vaccination is the most effective method of preventing infectious diseases; widespread immunity due to vaccination is largely responsible for the worldwide eradication of smallpox and the restriction of diseases such as polio, measles, and tetanus from much of the world.
Who are GOV.UK?GOV.UK is the official, centralised digital platform for the Government of the United Kingdom. Launched in 2012 by the Government Digital Service (GDS), it replaced hundreds of individual department websites to create a single, unified point of access for all public services, official publications, and government policy.
What is the NHS?The National Health Service (NHS) is the collective term for the four separate publicly funded healthcare systems of the United Kingdom. These being: the National Health Service (England), NHS Scotland, NHS Wales, and Health and Social Care (Northern Ireland) which was created separately and is often referred to locally as "the NHS". The NHS founding principles were that services should be comprehensive, universal and free at the point of delivery.