Active immunisation – body generates its own response to protect against infection through specialised cells and antibodies, as stimulated by vaccines. Full protection takes time to develop but is long lasting. Passive immunisation – ready-made antibodies are passed directly to the person being immunised.

How is immunization achieved?

Immunization is done through various techniques, most commonly vaccination. Vaccines against microorganisms that cause diseases can prepare the body's immune system, thus helping to fight or prevent an infection.

How does the Immunisation process work?

Vaccines use dead or severely weakened viruses to trick our bodies into thinking we have already had the disease. When you get a vaccine, your immune system responds to these weakened 'invaders' and creates antibodies to protect you against future infection.