Progress on major health conditions delivery plans »We remain committed to ensuring that quality improvement remains at the centre of our approach for the future of NHS Wales.Learn more »
Statement from the First Minister following meeting with the Prime Minister on Tata Steel
“My message to the Prime Minister this morning was simple. These plants cannot close.”
- Welsh Government agrees partnership in principle for £80m convention centre plans at Celtic Manor Resort, Newport
- £43m to improve Wales’ primary care services
- Statement from the First Minister following meeting with the Prime Minister on Tata Steel
- Consultation on Procurement Regulation in Wales
- National Outcomes Framework for Youth Work
- Proposed changes to Planning Policy Wales Chapter 6: The Historic Environment
Closing soonView all open consultations »
Section highlightEnvironment (Wales) Act 2016
The act puts in place the legislation needed to plan and manage Wales’ natural resources in a more proactive, sustainable and joined-up way.
Assembly bills »
Bills that the Welsh Government will bring forward.Learn more »
In this section
Section highlightWelsh taxes: a conversation
Share your thoughts on a new Taxpayers’ Charter.
Final Budget 2016-17 »
The amount of funding allocated to Welsh Government Main Expenditure Groups (MEGs) for 2016-17 is £15bn.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.