This study is a multi-center, double-blind, placebo-controlled, Phase I study to evaluate the safety, reactogenicity, tolerability, and immunogenicity of Modified Vaccinia Ankara-Bavarian Nordic-Yellow Fever (MVA-BN-YF) in Flavivirus-naive healthy male and non-pregnant female adult subjects. There are six dose groups in this study. Subjects who have never received a licensed or investigational smallpox vaccine will be randomized to Groups 1-5 and vaccine administration and follow-up will be conducted in a double-blinded fashion. Subjects who have previously received two, 1 x 10\^8 TCID50 doses of Modified Vaccinia Ankara-Bavarian Nordic (MVA-BN) between 19 and 45 days apart by s ubcutaneous (SC) or intramuscular (IM) routes will be enrolled in Group 6 and will be dosed open-label. Since this is a first in human, phase I study, a sentinel cohort will be utilized. The first two subjects (1st sentinel group) one at each clinical site will be randomized to Group 2 or 3 and vaccinated with MVA-BN-YF with or without Montanide ISA 720 adjuvant (ISA 720). Subjects and study personnel will be blinded as to whether ISA 720 was administered. The primary objectives are the: 1) assessment of the safety, tolerability, and reactogenicity of MVA-BN-YF vaccine administered with or without ISA 720; 2) comparison of the safety, tolerability, and reactogenicity of MVA-BN-YF vaccine administered with or without ISA 720 with Yellow Fever Vaccine (YF-VAX) and MVA-BN.
Age range
18 Years – 45 Years
Sex
ALL
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Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Comparison of Grade 3 local, systemic or laboratory toxicities, continuous Grade 2 or greater local reactogenicity
Timeframe: Day 1 through Day 8
Comparison of Grade 3 local, systemic or laboratory toxicities, continuous Grade 2 or greater local reactogenicity
Timeframe: Day 29 through Day 36
Number of adverse events of special interest (AESIs) considered related to study vaccination in Group 1
Timeframe: Day 1 through Day 394
Number of adverse events of special interest (AESIs) considered related to study vaccination in Group 2
Timeframe: Day 1 through Day 394
Number of adverse events of special interest (AESIs) considered related to study vaccination in Group 3
Timeframe: Day 1 through Day 394
Number of adverse events of special interest (AESIs) considered related to study vaccination in Group 4
Timeframe: Day 1 through Day 394
Number of adverse events of special interest (AESIs) considered related to study vaccination in Group 5
Timeframe: Day 1 through Day 394
Number of adverse events of special interest (AESIs) considered related to study vaccination in Group 6
Timeframe: Day 1 through Day 394
Number of adverse events of special interest (AESIs) considered related to study vaccination overall
Timeframe: Day 1 through Day 394
Number of related adverse events of special interest (AESIs)
Timeframe: Day 1 through Day 394
Number of related serious adverse events (SAEs)
Timeframe: Day 1 through Day 394
Number of serious adverse events (SAEs) considered related to study vaccination in Group 1
Timeframe: Day 1 through Day 394
Number of serious adverse events (SAEs) considered related to study vaccination in Group 2
Timeframe: Day 1 through Day 394
Number of serious adverse events (SAEs) considered related to study vaccination in Group 3
Timeframe: Day 1 through Day 394
Number of serious adverse events (SAEs) considered related to study vaccination in Group 4
Timeframe: Day 1 through Day 394
Number of serious adverse events (SAEs) considered related to study vaccination in Group 5
Timeframe: Day 1 through Day 394
Number of serious adverse events (SAEs) considered related to study vaccination in Group 6
Timeframe: Day 1 through Day 394
Number of serious adverse events (SAEs) considered related to study vaccination overall
Timeframe: Day 1 through Day 394
Number of subjects with new onset of a chronic medical condition in Group 1
Timeframe: Day 1 through Day 394
Number of subjects with new onset of a chronic medical condition in Group 2
Timeframe: Day 1 through Day 394
Number of subjects with new onset of a chronic medical condition in Group 3
Timeframe: Day 1 through Day 394
Number of subjects with new onset of a chronic medical condition in Group 4
Timeframe: Day 1 through Day 394
Number of subjects with new onset of a chronic medical condition in Group 5
Timeframe: Day 1 through Day 394
Number of subjects with new onset of a chronic medical condition in Group 6
Timeframe: Day 1 through Day 394
Number of subjects with new onset of a chronic medical condition overall
Timeframe: Day 1 through Day 394
Number of subjects with unsolicited vaccine-related adverse events (AEs) in Group 1
Timeframe: Day 1 through Day 57
Number of subjects with unsolicited vaccine-related adverse events (AEs) in Group 2
Timeframe: Day 1 through Day 57
Number of subjects with unsolicited vaccine-related adverse events (AEs) in Group 3
Timeframe: Day 1 through Day 57
Number of subjects with unsolicited vaccine-related adverse events (AEs) in Group 4
Timeframe: Day 1 through Day 57
Number of subjects with unsolicited vaccine-related adverse events (AEs) in Group 5
Timeframe: Day 1 through Day 57
Number of subjects with unsolicited vaccine-related adverse events (AEs) in Group 6
Timeframe: Day 1 through Day 57
Number of subjects with unsolicited vaccine-related adverse events (AEs) overall
Timeframe: Day 1 through Day 57
Number of vaccine-related laboratory adverse events (AEs) in Group 1
Timeframe: Day 1 through Day 57
Number of vaccine-related laboratory adverse events (AEs) in Group 2
Timeframe: Day 1 through Day 57
Number of vaccine-related laboratory adverse events (AEs) in Group 3
Timeframe: Day 1 through Day 57
Number of vaccine-related laboratory adverse events (AEs) in Group 4
Timeframe: Day 1 through Day 57
Number of vaccine-related laboratory adverse events (AEs) in Group 5
Timeframe: Day 1 through Day 57
Number of vaccine-related laboratory adverse events (AEs) in Group 6
Timeframe: Day 1 through Day 57
Number of withdrawals or discontinuation of vaccinations due to any reason
Timeframe: Day 1 through Day 394
Occurrence of solicited injection site reactogenicity events in Group 1
Timeframe: Day 1 through Day 8
Occurrence of solicited injection site reactogenicity events in Group 1
Timeframe: Day 29 through Day 36
Occurrence of solicited injection site reactogenicity events in Group 2
Timeframe: Day 1 through Day 8
Occurrence of solicited injection site reactogenicity events in Group 2
Timeframe: Day 29 through Day 36
Occurrence of solicited injection site reactogenicity events in Group 3
Timeframe: Day 1 through Day 8
Occurrence of solicited injection site reactogenicity events in Group 3
Timeframe: Day 29 through Day 36
Occurrence of solicited injection site reactogenicity events in Group 4
Timeframe: Day 1 through Day 8
Occurrence of solicited injection site reactogenicity events in Group 4
Timeframe: Day 29 through Day 36
Occurrence of solicited injection site reactogenicity events in Group 5
Timeframe: Day 1 through Day 8
Occurrence of solicited injection site reactogenicity events in Group 5
Timeframe: Day 29 through Day 36
Occurrence of solicited injection site reactogenicity events in Group 6
Timeframe: Day 1 through Day 8
Occurrence of solicited injection site reactogenicity events in Group 6
Timeframe: Day 29 through Day 36
Occurrence of solicited injection site reactogenicity events overall
Timeframe: Day 1 through Day 8
Occurrence of solicited injection site reactogenicity events overall
Timeframe: Day 29 through Day 36
Occurrence of solicited systemic reactogenicity events in Group 1
Timeframe: Day 1 through Day 8
Occurrence of solicited systemic reactogenicity events in Group 1
Timeframe: Day 29 through Day 36
Occurrence of solicited systemic reactogenicity events in Group 2
Timeframe: Day 1 through Day 8
Occurrence of solicited systemic reactogenicity events in Group 2
Timeframe: Day 29 through Day 36
Occurrence of solicited systemic reactogenicity events in Group 3
Timeframe: Day 1 through Day 8
Occurrence of solicited systemic reactogenicity events in Group 3
Timeframe: Day 29 through Day 36
Occurrence of solicited systemic reactogenicity events in Group 4
Timeframe: Day 1 through Day 8
Occurrence of solicited systemic reactogenicity events in Group 4
Timeframe: Day 29 through Day 36
Occurrence of solicited systemic reactogenicity events in Group 5
Timeframe: Day 1 through Day 8
Occurrence of solicited systemic reactogenicity events in Group 5
Timeframe: Day 29 through Day 36
Occurrence of solicited systemic reactogenicity events in Group 6
Timeframe: Day 1 through Day 8
Occurrence of solicited systemic reactogenicity events in Group 6
Timeframe: Day 29 through Day 36
Occurrence of solicited systemic reactogenicity events overall
Timeframe: Day 1 through Day 8
Occurrence of solicited systemic reactogenicity events overall
Timeframe: Day 29 through Day 36