International travel means that any infectious disease is only a few hours’ flight away. Travelers to countries which STILL have DISEASES like polio and diphtheria can bring back these diseases to the UK, and this can PUT unvaccinated people at risk. For example, two unvaccinated children in Europe have DIED of diphtheria since the start of 2015. Once a disease is wiped out in every country in the WORLD, vaccination is no longer necessary, but so far this has only happened in the case of smallpox.

International travel means that any infectious disease is only a few hours’ flight away. Travelers to countries which still have diseases like polio and diphtheria can bring back these diseases to the UK, and this can put unvaccinated people at risk. For example, two unvaccinated children in Europe have died of diphtheria since the start of 2015. Once a disease is wiped out in every country in the world, vaccination is no longer necessary, but so far this has only happened in the case of smallpox.