Immunisations, or vaccinations are given to help prevent people getting certain infections. A vaccine usually has a small dose of the inactive form of the germ or the poison made by the germ. A few vaccines are live. As it is inactive it does not cause the infection but it causes your body to make antibodies or immune cells against the germ or poison. These antibodies are proteins that attack infecting germs. Once you are immunised the antibodies are ready to attack the germ if it begins to invade our body. In this section we have information on all the currently available vaccines in the UK. Our doctor-authored leaflets will answer questions you may have such as "Why does my daughter need a HPV vaccine?" or "Is the MMR vaccine really safe?".