1. Determined by medical history, targeted physical examination and clinical judgement of the investigator to be in good health. Note: Heathy volunteers with pre-existing stable disease, defined as disease not requiring significant change in therapy or hospitalization for worsening disease during the 6 weeks before enrolment, can be included. <br/ >2. Subject is willing to provide a written informed consent for voluntary participation in the study. <br/ >3. Subject agrees to refrain from blood donation during the course of the study. <br/ >4. Subject have completed at least 6 months duration after second dose of vaccination

1. Determined by medical history, targeted physical examination and clinical judgement of the investigator to be in good health. Note: Heathy volunteers with pre-existing stable disease, defined as disease not requiring significant change in therapy or hospitalization for worsening disease during the 6 weeks before enrolment, can be included. <br/ >2. Subject is willing to provide a written informed consent for voluntary participation in the study. <br/ >3. Subject agrees to refrain from blood donation during the course of the study. <br/ >4. Subject have completed at least 6 months duration after second dose of vaccination