Immunogenicity and Safety Study of FSME-IMMUN 0.5 mL in Adult Subjects Previously Vaccinated According to a Rapid Immunization Schedule

Inclusion Criteria: Male and female subjects will be eligible for participation in this study if they: * Understand the nature of the study, agree to its provisions and provide written informed consent (assent if the subjects is under 18 years of age); * Provide the written informed consent of their parents / legal guardian (if the subject is under 18 years of age); * Are aged \>= 16 years (from the 16th birthday) at screening; * Are clinically healthy, (i.e. the physician would have no reservations vaccinating with FSME-IMMUN 0.5 ml outside the scope of a clinical trial); * Have a negative pregnancy test result at the first medical examination (if female and capable of bearing children); * Agree to employ adequate birth control measures for the duration of the study (if female and capable of bearing children); * Agree to keep a Subject Diary. Exclusion Criteria: Subjects will be excluded from participation in this study if they: * Have a history of any previous tick-borne encephalitis (TBE) vaccination; * Have a history of TBE infection; * Have a history of infection with or vaccination against other flaviviruses (e.g. dengue fever, yellow fever, Japanese B-encephalitis); * Have a history of allergic reactions, in particular to one of the components of the vaccine; * Suffer 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 functions; * Have a known or suspected p…