Immunogenicity, Safety and Interchangeability of Two Tbe Vaccines Administered According to a Conventional Schedule in Children

Inclusion Criteria: Male and female children will be eligible for participation in this study if: * they are aged \>= 1 years (from the 1st birthday) to 11 years (to the last day before the 12th birthday) at screening; * their parents / legal guardians provide written informed consent; * children provide written assent to the study according to age and capacity of understanding; * their parents/guardians understand the nature of the clinical study and will comply with the requirements of the protocol (e.g., completion of the Subject Diary, return for follow-up visits); * they are generally healthy, (i.e. the physician would have no reservations vaccinating with a TBE vaccine outside the scope of a clinical study); * provide a negative pregnancy test result at the first medical examination (if the subject is a female and capable of bearing children). Exclusion Criteria: Subjects will be excluded from participation if: * they have a history of any previous TBE vaccination; * they have a history of TBE infection; * they have a history of infection with other flaviviruses; * they have a history of vaccination against yellow fever and/or Japanese B encephalitis; * they have a history of severe allergic reactions, in particular a known sensitivity or allergy to any components of the vaccines; * they are suffering from a disease (e.g. autoimmune disease) or are undergoing a form of treatment (e.g. systemic corticosteroids) that can be expected to influence immunological functio…