inclusion criteria: 1. clinically healthy subjects aged 18 years and above. 2. subjects had previously received complete primary doses of indovac® with the last dose administered minimum 12 months but no longer than 18 months prior to inclusion. 3. subjects have been informed properly regarding the study and signed the informed consent form. 4. subjects will commit to comply with the instructions of the investigator and the schedule of the trial.

inclusion criteria: 1. clinically healthy subjects aged 18 years and above. 2. subjects had previously received complete primary doses of indovac® with the last dose administered minimum 12 months but no longer than 18 months prior to inclusion. 3. subjects have been informed properly regarding the study and signed the informed consent form. 4. subjects will commit to comply with the instructions of the investigator and the schedule of the trial.

inclusion criteria: clinically healthy subjects aged 18 years and above. subjects had previously received complete primary doses of indovac® with the last dose administered minimum 12 months but no longer than 18 months prior to inclusion. subjects have been informed properly regarding the study and signed the informed consent form. subjects will commit to comply with the instructions of the investigator and the schedule of the trial.

inclusion criteria: clinically healthy subjects aged 18 years and above. subjects had previously received complete primary doses of indovac® with the last dose administered minimum 12 months but no longer than 18 months prior to inclusion. subjects have been informed properly regarding the study and signed the informed consent form. subjects will commit to comply with the instructions of the investigator and the schedule of the trial.