Phase 2b Placebo-Controlled Randomized Study of BPZE1 Intranasal Pertussis Vaccine in Healthy School-Age Children to Assess Immunological Response and Safety of a Single Dose BPZE1 With/Without Coadministration of Tdap (Boostrix™)
Sponsor study identifier
interventional
368
3 countries
16
Study Start
November 11, 2021
Actual (reported)Primary Completion
May 15, 2024
Actual (reported)Study Completion
May 15, 2024
Actual (reported)This study evaluates the safety and immunogenicity of the BPZE1 live, attenuated pertussis vaccine, intended to prevent nasopharyngeal colonization and pertussis disease, and compares BPZE1 vaccine vs Boostrix vaccine vs both BPZE1 and Boostrix vaccines. This is a multi-center, randomized, placebo- and active-comparator-controlled study in healthy, school-age children with a 6-month safety follow-up after the first vaccination.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
May 15, 2024
Actual (reported)Click on a node to explore related trials.
Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
October 20, 2021
Actual (reported)November 10, 2021
Actual (reported)November 11, 2021
Actual (reported)May 15, 2024
Actual (reported)May 15, 2024
Actual (reported)November 6, 2025
Actual (reported)Geometric Mean Fold Rise (GMFR) of Mucosal Immunogenicity S-IgA Against Whole Cell Extract at Day 29
Geometric mean fold rise (GMFR) of mucosal S-IgA against whole cell extract (WCE) by treatment arm (BPZE1, BPZE1 + Boostrix) at Day 29.
Day 29
Safety: Solicited Adverse Events (AEs)
Solicited AEs (local injection site, nasal/respiratory, and systemic reactogenicity events)
Through 7 days following first study vaccination.
Serum IgG: Proportion of Subjects With Antibody Concentration ≥0.1 Immunogenicity Serum IgG for Diphtheria, Tetanus
Day 29
Serum IgG: Geometric Mean Concentration (GMC) Against Acellular Pertussis Antigens
Day 29
Mucosal Immunogenicity S-IgA GMR
Baseline, Day 29
Mucosal Immunogenicity S-IgA GMFR
Day 29
Serum Immunogenicity IgA and IgG GMC
Baseline, Day 29
Individual will receive an intranasal dose of BPZE1 via the mucosal atomization device and a dose of intramuscular placebo.
Individual will receive an intranasal dose of BPZE1 via the mucosal atomization device and a dose of intramuscular Boostrix (acellular pertussis \[aP\] vaccine).
Live attenuated pertussis vaccine and placebo
Live attenuated pertussis vaccine and tetanus, diphtheria, and aP vaccine
Sydney Children's Hospital
Randwick, New South Wales, Australia
Sydney Children's Hospital
Westmead, New South Wales, Australia
Women's and Children's Hospital
North Adelaide, South Australia, Australia
University of Melbourne
Melbourne, Victoria, Australia
Telethon Kids Institute
Nedlands, Western Australia, Australia
CSA Clinica San Augustin
San José, Costa Rica
IICIMED Instituto de Investigacion en Ciencias Medicas
San José, Costa Rica
Faust SN, Cespedes J, Avila L, Ivankovich-Escoto G, Marshall HS, Richmond P, Nolan T, Bernatoniene J, Bandi S, Shenoy A, Rayner S, Weissfeld L, Lang W, Samal V, Goldstein P, Rubin K, Locht C, Noviello S; SUPER Trial Investigators. Immunogenicity and safety of BPZE1, an intranasal live attenuated pertussis vaccine, evaluated with and without tetanus-reduced diphtheria-acellular pertussis vaccine in healthy children aged 6-17 years: a randomised, active-controlled and placebo-controlled, phase 2b trial. Lancet Infect Dis. 2026 Oct 1:S1473-3099(26)00470-6. doi: 10.1016/S1473-3099(26)00470-6. Online ahead of print.
368 participants (actual enrollment reported by the registry).
First Submitted
October 20, 2021
First Posted
November 10, 2021
Study Start
November 11, 2021
Actual (reported)EUpertstrain 4 Study of Bordetella Pertussis Isolates
Individual will receive an intranasal dose of placebo via the mucosal atomization device and a dose of intramuscular Boostrix (aP vaccine comparator).
Tetanus, diphtheria, and aP vaccine and placebo
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Contact the study team to confirm eligibility.
MRI, Metropolitan Research Institute
San José, Costa Rica
Birmingham Children's Hospital NHS Foundation Trust
Birmingham, United Kingdom
Bradford Royal Infirmary
Bradford, United Kingdom
Bristol Royal Hospital For Children
Bristol, United Kingdom
Addenbrooke's Hospital
Cambridge, United Kingdom
Leicester Children's Hospital, Ward 14, Level 4,
Leicester, United Kingdom
St George's Healthcare NHS Trust
London, United Kingdom
Oxford Vaccine Group
Oxford, United Kingdom
University Hospital Southampton NHS Foundation Trust
Southampton, United Kingdom
Primary Completion
May 15, 2024
Actual (reported)Study Completion
May 15, 2024
Actual (reported)Last Updated
November 6, 2025
Results First Posted
November 6, 2025
Record last verified: 2025-10
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Source: ClinicalTrials.gov.
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