Multiple vaccines serve millions with improved immunity  Multiple vaccines do the job of individual vaccines, but more efficiently and faster. Vaccines work because our body has a natural defense system called the immune system. The immune system recognizes foreign bodies such as viruses and bacteria and creates antibodies to destroy them. Once your immune system has had contact with a particular virus or bacteria it knows how to protect the body against it. Vaccines use the body’s ability to do this to help protect us against diseases that may otherwise be deadly. Vaccines contains part of the virus or disease and when injected stimulate the body to create antibodies to fight and neutralize the disease.  Multiple vaccines specifically are more efficient in delivering such vaccines than separate, individual injections. Combined vaccines reduce the number of necessary injections by a third, meaning less pain and less possible side-effects. Combined vaccines also reduce the time that children are at risk from the diseases being vaccinated against, leading directly to fewer cases of such diseases in the population [1] . The MMR combined vaccine, for example, which protects against measles, mumps and rubella, has led to an ‘all-time low’ number of children catching these diseases since being introduced in the United Kingdom [2] .  Let us be absolutely clear. The alternative to multiple vaccinations are single vaccinations, which take time and expose risk. Undoubtedly children’s lives have been endangered or lost for a completely fictional harm.  [1] Bupa, Measles, mumps and rubella (MMR) vaccine, January 2010,  , accessed 13/07/2011  [2] NHS Choices, Introduction,  , accessed 13/07/11