Information is extremely important for immunisation programmes. The information should be clear, transparent, easily accessible and adapted to the different target populations. Parents consider the information presently available to be insufficient. This constitutes an obstacle to the introduction of universal vaccination against Hepatitis B in Switzerland. The population groups targeted by the information have to be the public health authorities, physicians, adolescents, parents and teachers. Various documents are now available or in preparation and should allow an effective discussion between these different partners.