Energy Wales Statement »The energy system in Wales is on the threshold of great change driven by new energy, technology and low carbon energy transition objectives.Learn more »
- National Pathway for Homelessness Services to Children, Young People and Adults in the Secure Estate
- Draft revised guidance on disciplinary and dismissal procedures for school staff
- Prevention of Pollution (Oil Storage) (Wales) Regulations
- Welsh Government Draft Equality Objectives for 2016-2020
- Future arrangements for the Welsh Government’s Equality and Inclusion Programme for 2017-2020
Featured consultation »Draft non-statutory guidance for local authorities on elective home education
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Section highlightEnvironment (Wales) BillThe bill creates the legislation needed to plan and manage Wales’ natural resources in a more sustainable and joined-up way.
Legislative programme 2014 - 2015 »
Bills that the Welsh Government will bring forward in 2014/2015.Learn more »
Section highlightTaxes in Wales
The devolution of some taxes to Wales from April 2018 provides us with the opportunity to reshape those taxes to better meet our circumstances and priorities.
1st Supplementary Budget 2015-16 »
The 1st supplementary budget proposes a number of changes to the final budget for 2015-16, which was published in December 2014.Learn more »
- Statistics & Research
What is immunisation?
Immunisation is a way of creating immunity to certain infections.
Immunisation uses vaccines that contain relatively harmless antigens (molecules) that come from, or are similar to, the micro-organisms that cause the diseases. Micro-organisms can be viruses, such as measles, or they can be bacteria such as tuberculosis.
Vaccines stimulate the immune system into reacting as if there were a real infection. The immune system then fights off the infection and remembers the organism so it has the ability to fight it off quickly if met again.
Unlike most drugs, vaccines are given to healthy people so that they and the general population are protected from disease. Low immunisation rates and outbreaks of disease pose significant threats to the health of people who have not been protected and remain non-immune.
After clean water, vaccination is the most effective public health intervention in the world for saving lives and promoting good health. The term vaccination originated from the procedure used to protect people with the first vaccine for smallpox, vaccinia.
Visit NHS Wales Direct (external link) for more information.