Five facts about immunisation

1. There is no mercury in UK vaccines.
2. There is no proof that the MMR vaccine causes autism (or that any other vaccine causes autism).
3. Immunisation programmes rely on herd immunity for their effectiveness.
4. Flu vaccine won't give you flu - although you might already have a 'flu-like illness' at the time of being immunised.
5. Some viruses (such as flu [influenza]) mutate too quickly to be eradicated by a single immunisation campaign.