Safety and Immunogenicity Study of 3 Vaccinations With TICOVAC in 2 Dosages in Healthy Children Aged Between 6 Months and 3 Years

Inclusion Criteria: * Male and female children aged between 6 and 47 months * No history of any previous TBE vaccination * Clinically healthy * Informed consent provided by the parents Exclusion Criteria: * History of allergic reactions, in particular allergic reactions to one of the components of the vaccine * Suffering from a disease that cannot be effectively treated or stabilised * Suffering from a disease or undergoing a form of treatment which can be expected to influence immunological functions * Suffering from a chronic, degenerative and/or inflammatory disease of the central nervous system * HIV-positivity (no special HIV test required for the purpose of the study) * Suffering from a febrile disease * History of vaccination against yellow fever and/or Japanese encephalitis * Participation in another clinical trial