ClinicalTrials.gg
CompletedNCT02509494EBOVAC-SaloneUpdated Jul 18, 2022Results posted

Staged Phase 3 Study to Assess the Safety and Immunogenicity of Ebola Candidate Vaccines Ad26.ZEBOV and MVA-BN-Filo

A Phase 3 interventional study of Ad26.ZEBOV and MVA-BN-Filo in Ebola Virus Disease, sponsored by Janssen Vaccines & Prevention B.V.. Completed at 1 site in Sierra Leone. Open to participants aged 1 Year and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-07-18.

Sponsored by Janssen Vaccines & Prevention B.V. (part of Johnson & Johnson) · Phase 3, Interventional, and Prevention

Phase
Phase 3
Study type
Interventional
Enrollment
1,023
Allocation
Randomized
Ages
1 Year and older
Sex
All
01

Study summary

The purpose of this study is the evaluation of the safety and immunogenicity of two candidate Ebola vaccines Ad26.ZEBOV and MVA-BN-Filo, in a 2-dose heterologous regimen.

Read the detailed description

This is staged Phase 3 study to gather information on the safety and immunogenicity of a 2-dose heterologous regimen. In this regimen, Ad26.ZEBOV will be administered as a Dose 1 vaccination followed by the candidate vaccine MVA-BN-Filo (Dose 2 56 days later) and a booster dose of A26.ZEBOV will be administered 2 years post Dose 1 vaccination to participants in Stage 1 who consent to this. The study will take place in Sierra Leone and will consist of a screening phase, an active phase (vaccination) and a follow-up phase. The active phase of the study will be conducted initially in two stages. In the first stage approximately 40 adults aged 18 years or older will be vaccinated to gain information about the safety and immunogenicity of the 2-dose heterologous vaccine regimen. In stage 2 a larger group of approximately 976 individuals will be vaccinated to further evaluate the safety and immunogenicity of the 2 dose heterologous vaccine regimen across different age groups. In this stage, children aged 1 year or older, adolescents and adults will be included. Solicited local and systemic adverse events will be collected until 7 days after the Dose 1 and Dose 2 vaccination. Unsolicited adverse events will be collected from signing of the informed consent form (ICF) onwards until 56 days after the Dose 2 vaccination in Stage 1 and then again from the day of the booster vaccination until 28 days after the booster vaccination, and until 28 days after each vaccination in stage 2. Serious adverse events will be collected from signing of the ICF onwards until 12 and 36 months after the Dose 1 vaccination in Stage 2 and Stage 1, respectively. These data will be reviewed by an independent data monitoring committee (IDMC) to assess whether initiation of vaccination in the next stage or age group can be provided. Safety evaluations will include assessment of adverse events, which will be monitored throughout the study. Participants in Stage 2 will be followed up for safety and immunogenicity until 12 months (children and adolescents) or 24 months (adults) after the Dose 1 vaccination. Participants in Stage 1 will be followed up for safety and immunogenicity until 36 months after the Dose 1 vaccination or until 1 year after the booster vaccination.

02

Conditions studied

  • Ebola Virus Disease

Keywords

  • Vaccine
  • Ebola
  • Ebola virus disease
  • EVD
  • Hemorrhagic fever
  • Sierra Leone
  • Human adenovirus serotype 26 (Ad26) encoding the Ebola virus Mayinga variant glycoprotein (Ad26.ZEBOV)
  • Safety
  • Immunogenicity
  • Modified Vaccinia Virus Ankara - Bavarian Nordic Filo-vector
  • (MVA-BN Filo)
03

In context

Hemorrhagic Fever, Ebola

104 studies on the registry are indexed under Hemorrhagic Fever, Ebola; 13 are open to participants now.

This study's enrollment of 1,023 is above the median of 94 across 81 interventional studies indexed under Hemorrhagic Fever, Ebola.

Browse Hemorrhagic Fever, Ebola studies →

Lead sponsor

Janssen Vaccines & Prevention B.V. is the lead sponsor of 49 studies on the registry; none are open to participants now.

Of its 37 completed or terminated interventional studies of FDA-regulated products, 32 (86%) have results posted.

First submitted after Janssen Vaccines & Prevention B.V. became part of Johnson & Johnson.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
1 Year and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Documented community engagement from community leader and a signed inform consent form (ICF) from each participant must be available
  • Participant Stage 1 must be 18 years or older at screening and be resident in selected study community with no intention to move from study area within the next 5 months
  • Participant must be healthy with no abnormalities in laboratory screening tests within 28 days before Dose 1 vaccination
  • Female participants of must use adequate measures and must have a negative pregnancy test at screening and immediately prior to each study vaccination
  • Participant must pass the test of understanding (TOU)

Additional Inclusion criteria Stage 2:

  • One year or older at screening (children of enrolled parents are eligible)
  • Parent/legal guardian (for children) must pass the TOU before signing the ICF
  • Subjects aged 7 years and older will be asked to give positive assent in the presence of a witness

Exclusion criteria

Exclusion Criteria:

  • Diagnosed with EVD or under quarantine/exposed to Ebola or body temperature equal of >= 38 degree Celsius (fever)
  • Having an acute illness (mild in nature that can be treated at home) or any acute/chronic medical condition or having a decreased number of red blood cells/ in the blood (anemia)
  • Previously participated in another Ebola interventional study or received any Ad26/MVA-based candidate vaccine
  • Vaccinated with within 30 days or with inactivated vaccines 15 days before Dose 1 vaccination
  • Treated with an drug at the time of screening

Additional exclusion criteria:

  • Children up to 5 years of age with severe malnutrition (underweight or Z-score weight \<2)
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
1,023 participants (actual)

Study arms

  • Experimental
    Stage 1: Active vaccination

    Ad26.ZEBOV will be administered as a 0.5 milliliter (mL) intramuscular (IM) injection (Dose 1); MVA-BN-Filo will be administered as a 0.5 mL IM injection (Dose 2). The booster vaccination using Ad26.ZEBOV will be administered as a 0.5 mL IM injection (2 years post Dose 1).

    Biological: Ad26.ZEBOV · Biological: MVA-BN-Filo

  • Experimental
    Stage 2: Active vaccination

    Ad26.ZEBOV will be administered as a 0.5 mL IM injection (Dose 1); MVA-BN-Filo will be administered as a 0.5 mL IM injection (Dose 2).

    Biological: Ad26.ZEBOV · Biological: MVA-BN-Filo

  • Experimental
    Stage 2: Active vaccination for children

    Ad26.ZEBOV will be administered as a 0.5 mL IM injection (Dose 1); MVA-BN-Filo will be administered as a 0.5 mL IM injection (Dose 2). Children aged less than 2 years at randomization will receive a booster dose of vaccination at 3 months post Dose 2 with Placebo.

    Biological: Ad26.ZEBOV · Biological: MVA-BN-Filo

  • Active comparator
    Stage 2: Control vaccination

    MenACWY will be administered as a 0.5 mL IM injection on Day 1 (Dose 1) and placebo on Day 57 (Dose 2).

    Biological: MenACWY · Biological: Placebo

  • Active comparator
    Stage 2: Control vaccination for children

    MenACWY will be administered as a 0.5 mL IM injection on Day 1 (Dose 1) and placebo on Day 57 (Dose 2). Children aged less than 2 years at randomization will receive a booster dose of MenACWY vaccination at 3 months post Dose 2 with MenACWY.

    Biological: MenACWY · Biological: Placebo

Interventions

  • BiologicalAd26.ZEBOV

    Ebola Zaire vaccine, replication incompetent vaccine, sterile suspension of 0.5 milliliter (mL) intramuscular (IM) injection of 5\*10\^10 viral particles.

  • BiologicalMVA-BN-Filo

    MVA-BN-Filo- is a non-replicating vaccine, 0.5 mL IM injection of 1\*10\^8 Infectious Unit (Inf. U.).

  • BiologicalMenACWY

    MenACWY is a WHO-prequalified Meningococcal Group A, C, W135 and Y conjugate vaccine.

  • BiologicalPlacebo

    0.9% saline for injection.

06

What researchers measure

Primary outcomes

  1. Stages 1 and 2: Number of Participants With Solicited Local Adverse Events (AEs) (Day 8)

    Number of participants with solicited local AEs were reported. Solicited local AEs were pre-defined local (at the injection site) AEs for which participants were specifically questioned and which were noted by participants in their diary for 7 days post vaccination. Solicited local AEs were: injection site pain/tenderness, erythema, induration/swelling, itching at the vaccination site.

    Time frame: 7 days post dose 1 (Day 8)

  2. Stages 1 and 2: Number of Participants With Solicited Local AEs (Day 64)

    Number of participants with solicited local AEs were reported. Solicited local AEs were pre-defined local (at the injection site) AEs for which participants were specifically questioned and which were noted by participants in their diary for 7 days post vaccination. Solicited local AEs were: injection site pain/tenderness, erythema, induration/swelling, itching at the vaccination site.

    Time frame: 7 days post dose 2 (Day 64)

  3. Stage 1: Number of Participants With Solicited Local AEs (Day 738)

    Number of participants with solicited local AEs were reported. Solicited local AEs were pre-defined local (at the injection site) AEs for which participants were specifically questioned and which were noted by participants in their diary for 7 days post vaccination. Solicited local AEs were: injection site pain/tenderness, erythema, induration/swelling, itching at the vaccination site.

    Time frame: 7 days post dose 3 (Day 738)

  4. Stages 1 and 2: Number of Participants With Solicited Systemic AEs (Day 8)

    Number of participants with solicited systemic AEs were reported. Solicited systemic AEs included body temperature, vomiting, reduced activity, somnolence, fatigue, irritability/fussiness/crying/screaming, and loss of appetite (for preverbal children/infants) and body temperature, nausea/vomiting, fatigue/malaise, muscle pain, chills, joint pain and headache (for young children, adolescents, and adults).

    Time frame: 7 days post dose 1 (Day 8)

  5. Stages 1 and 2: Number of Participants With Solicited Systemic AEs (Day 64)

    Number of participants with solicited systemic AEs were reported. Solicited systemic AEs included body temperature, vomiting, reduced activity, somnolence, fatigue, irritability/fussiness/crying/screaming, and loss of appetite (for preverbal children/infants) and body temperature, nausea/vomiting, fatigue/malaise, muscle pain, chills, joint pain and headache (for young children, adolescents, and adults).

    Time frame: 7 days post dose 2 (Day 64)

  6. Stage 1: Number of Participants With Solicited Systemic AEs (Day 738)

    Number of participants with solicited systemic AEs were reported. Solicited systemic AEs included body temperature, vomiting, reduced activity, somnolence, fatigue, irritability/fussiness/crying/screaming, and loss of appetite (for preverbal children/infants) and body temperature, nausea/vomiting, fatigue/malaise, muscle pain, chills, joint pain and headache (for young children, adolescents, and adults).

    Time frame: 7 days post dose 3 (Up to Day 738)

  7. Stages 1: Number of Participants With Serious Adverse Events (SAEs)

    Number of Participants with SAEs were reported. SAE is any untoward medical occurrence that at any dose may result in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, is a suspected transmission of any infectious agent via a medicinal product.

    Time frame: Up to 36 months

  8. Stages 2: Number of Participants With SAEs

    Number of Participants with SAEs were reported. SAE is any untoward medical occurrence that at any dose may result in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, is a suspected transmission of any infectious agent via a medicinal product.

    Time frame: Up to 24 months

  9. Stage 1: Number of Participants With Unsolicited AEs (Day 759)

    Number of participants with unsolicited AEs were reported. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

    Time frame: 28 days post booster dose (Day 759)

  10. Stage 1: Number of Participants With Unsolicited AEs (Day 29)

    Number of participants with unsolicited AEs were reported. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

    Time frame: 28 days post dose 1 (Day 29)

  11. Stage 2: Number of Participants With Unsolicited AEs (Day 29)

    Number of participants with unsolicited AEs were reported. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

    Time frame: 28 days post dose 1 (Day 29)

  12. Stage 1: Number of Participants With Unsolicited AEs (Day 85)

    Number of participants with unsolicited AEs were reported. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

    Time frame: 28 days post dose 2 (Day 85)

  13. Stage 2: Number of Participants With Unsolicited AEs (Day 85)

    Number of participants with unsolicited AEs were reported. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

    Time frame: 28 days post dose 2 (Day 85)

  14. Stage 1: Number of Participants With Deaths

    Number of participants with deaths were reported.

    Time frame: Up to 36 months

  15. Stage 2: Number of Participants With Deaths (Children and Adolescents)

    Number of participants (children and adolescents) with deaths were reported.

    Time frame: Up to 12 months

  16. Stage 2: Number of Participants With Deaths (Adults)

    Number of participants (adults) with deaths were reported.

    Time frame: Up to 24 months

  17. Stage 1: Number of Participants With Immediate Reportable Event (IREs)

    Number of participants with IREs were reported. The following list of neuroinflammatory disorders are categorized as IREs: Cranial nerve disorders, including paralyses/paresis, optic neuritis, multiple sclerosis, transverse myelitis, guillain-Barré syndrome, acute disseminated encephalomyelitis, including site specific variants, myasthenia gravis and Lambert-Eaton myasthenic syndrome, immune-mediated peripheral neuropathies and plexopathies, narcolepsy, isolated paresthesia of greater than (\>) 7 days duration.

    Time frame: Up to 36 months

  18. Stage 2: Number of Participants With IREs (Children and Adolescents)

    Number of participants (children and adolescents) with IREs were reported. The following list of neuroinflammatory disorders are categorized as IREs: Cranial nerve disorders, including paralyses/paresis, optic neuritis, multiple sclerosis, transverse myelitis, guillain-Barré syndrome, acute disseminated encephalomyelitis, including site specific variants, myasthenia gravis and Lambert-Eaton myasthenic syndrome, immune-mediated peripheral neuropathies and plexopathies, narcolepsy, isolated paresthesia of greater than (\>) 7 days duration.

    Time frame: Up to 12 months

  19. Stage 2: Number of Participants With IREs (Adults)

    Number of participants (adults) with IREs were reported. The following list of neuroinflammatory disorders are categorized as IREs: Cranial nerve disorders, including paralyses/paresis, optic neuritis, multiple sclerosis, transverse myelitis, guillain-Barré syndrome, acute disseminated encephalomyelitis, including site specific variants, myasthenia gravis and Lambert-Eaton myasthenic syndrome, immune-mediated peripheral neuropathies and plexopathies, narcolepsy, isolated paresthesia of greater than (\>) 7 days duration.

    Time frame: Up to 24 months

Secondary outcomes

  1. Stages 1 and 2: Geometric Mean Concentrations (GMCs) of Binding Antibody Levels Against Ebola Virus Glycoprotein (EBOV GP) Measured Using Enzyme-linked Immunosorbent Assay (ELISA)

    GMCs of antibodies binding to EBOV GP using ELISA were reported and were measured in ELISA units per milliliter (EU/mL). Serum samples were collected for analysis of binding antibodies against EBOV GP using ELISA to determine humoral responses following vaccination. For ELISA binding antibody responses, values below the lower limit of quantification (LLOQ) (36.11 ELISA units/mL).

    Time frame: 21 days post-dose 2 (Day 78)

07

Results

Posted Jul 18, 2022

Participant flow

Participant flow — Overall Study
MilestoneStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Started43298102143481444814448
Completed2821764132431334513746
Not completed15813811511372
Withdrew: Lost to follow-up84719633131
Withdrew: Physician decision210000000
Withdrew: Withdrawal by subject4177506121
Withdrew: Death010010010
Withdrew: Other045000000
Withdrew: Non-compliance with study drug1117012110

Outcome measures

PrimaryStages 1 and 2: Number of Participants With Solicited Local Adverse Events (AEs) (Day 8)

Number of participants with solicited local AEs were reported. Solicited local AEs were pre-defined local (at the injection site) AEs for which participants were specifically questioned and which were noted by participants in their diary for 7 days post vaccination. Solicited local AEs were: injection site pain/tenderness, erythema, induration/swelling, itching at the vaccination site.

Time frame:
7 days post dose 1 (Day 8)
Reported as:
Count of participants · Participants
Stages 1 and 2: Number of Participants With Solicited Local Adverse Events (AEs) (Day 8)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Stages 1 and 2: Number of Participants With Solicited Local Adverse Events (AEs) (Day 8)125117143302215
PrimaryStages 1 and 2: Number of Participants With Solicited Local AEs (Day 64)

Number of participants with solicited local AEs were reported. Solicited local AEs were pre-defined local (at the injection site) AEs for which participants were specifically questioned and which were noted by participants in their diary for 7 days post vaccination. Solicited local AEs were: injection site pain/tenderness, erythema, induration/swelling, itching at the vaccination site.

Time frame:
7 days post dose 2 (Day 64)
Reported as:
Count of participants · Participants
Stages 1 and 2: Number of Participants With Solicited Local AEs (Day 64)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Stages 1 and 2: Number of Participants With Solicited Local AEs (Day 64)658821122570
PrimaryStage 1: Number of Participants With Solicited Local AEs (Day 738)

Number of participants with solicited local AEs were reported. Solicited local AEs were pre-defined local (at the injection site) AEs for which participants were specifically questioned and which were noted by participants in their diary for 7 days post vaccination. Solicited local AEs were: injection site pain/tenderness, erythema, induration/swelling, itching at the vaccination site.

Time frame:
7 days post dose 3 (Day 738)
Reported as:
Count of participants · Participants
Stage 1: Number of Participants With Solicited Local AEs (Day 738)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)
Stage 1: Number of Participants With Solicited Local AEs (Day 738)5
PrimaryStages 1 and 2: Number of Participants With Solicited Systemic AEs (Day 8)

Number of participants with solicited systemic AEs were reported. Solicited systemic AEs included body temperature, vomiting, reduced activity, somnolence, fatigue, irritability/fussiness/crying/screaming, and loss of appetite (for preverbal children/infants) and body temperature, nausea/vomiting, fatigue/malaise, muscle pain, chills, joint pain and headache (for young children, adolescents, and adults).

Time frame:
7 days post dose 1 (Day 8)
Reported as:
Count of participants · Participants
Stages 1 and 2: Number of Participants With Solicited Systemic AEs (Day 8)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Stages 1 and 2: Number of Participants With Solicited Systemic AEs (Day 8)1816151521445153612
PrimaryStages 1 and 2: Number of Participants With Solicited Systemic AEs (Day 64)

Number of participants with solicited systemic AEs were reported. Solicited systemic AEs included body temperature, vomiting, reduced activity, somnolence, fatigue, irritability/fussiness/crying/screaming, and loss of appetite (for preverbal children/infants) and body temperature, nausea/vomiting, fatigue/malaise, muscle pain, chills, joint pain and headache (for young children, adolescents, and adults).

Time frame:
7 days post dose 2 (Day 64)
Reported as:
Count of participants · Participants
Stages 1 and 2: Number of Participants With Solicited Systemic AEs (Day 64)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Stages 1 and 2: Number of Participants With Solicited Systemic AEs (Day 64)17107392662782314
PrimaryStage 1: Number of Participants With Solicited Systemic AEs (Day 738)

Number of participants with solicited systemic AEs were reported. Solicited systemic AEs included body temperature, vomiting, reduced activity, somnolence, fatigue, irritability/fussiness/crying/screaming, and loss of appetite (for preverbal children/infants) and body temperature, nausea/vomiting, fatigue/malaise, muscle pain, chills, joint pain and headache (for young children, adolescents, and adults).

Time frame:
7 days post dose 3 (Up to Day 738)
Reported as:
Count of participants · Participants
Stage 1: Number of Participants With Solicited Systemic AEs (Day 738)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)
Stage 1: Number of Participants With Solicited Systemic AEs (Day 738)9
PrimaryStages 1: Number of Participants With Serious Adverse Events (SAEs)

Number of Participants with SAEs were reported. SAE is any untoward medical occurrence that at any dose may result in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, is a suspected transmission of any infectious agent via a medicinal product.

Time frame:
Up to 36 months
Reported as:
Count of participants · Participants
Stages 1: Number of Participants With Serious Adverse Events (SAEs)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)
Stages 1: Number of Participants With Serious Adverse Events (SAEs)3
PrimaryStages 2: Number of Participants With SAEs

Number of Participants with SAEs were reported. SAE is any untoward medical occurrence that at any dose may result in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, is a suspected transmission of any infectious agent via a medicinal product.

Time frame:
Up to 24 months
Reported as:
Count of participants · Participants
Stages 2: Number of Participants With SAEs
ParticipantsStage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Stages 2: Number of Participants With SAEs1640150153
PrimaryStage 1: Number of Participants With Unsolicited AEs (Day 759)

Number of participants with unsolicited AEs were reported. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

Time frame:
28 days post booster dose (Day 759)
Reported as:
Count of participants · Participants
Stage 1: Number of Participants With Unsolicited AEs (Day 759)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)
Stage 1: Number of Participants With Unsolicited AEs (Day 759)5
PrimaryStage 1: Number of Participants With Unsolicited AEs (Day 29)

Number of participants with unsolicited AEs were reported. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

Time frame:
28 days post dose 1 (Day 29)
Reported as:
Count of participants · Participants
Stage 1: Number of Participants With Unsolicited AEs (Day 29)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)
Stage 1: Number of Participants With Unsolicited AEs (Day 29)17
PrimaryStage 2: Number of Participants With Unsolicited AEs (Day 29)

Number of participants with unsolicited AEs were reported. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

Time frame:
28 days post dose 1 (Day 29)
Reported as:
Count of participants · Participants
Stage 2: Number of Participants With Unsolicited AEs (Day 29)
ParticipantsStage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Stage 2: Number of Participants With Unsolicited AEs (Day 29)19865542060188828
PrimaryStage 1: Number of Participants With Unsolicited AEs (Day 85)

Number of participants with unsolicited AEs were reported. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

Time frame:
28 days post dose 2 (Day 85)
Reported as:
Count of participants · Participants
Stage 1: Number of Participants With Unsolicited AEs (Day 85)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)
Stage 1: Number of Participants With Unsolicited AEs (Day 85)17
PrimaryStage 2: Number of Participants With Unsolicited AEs (Day 85)

Number of participants with unsolicited AEs were reported. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

Time frame:
28 days post dose 2 (Day 85)
Reported as:
Count of participants · Participants
Stage 2: Number of Participants With Unsolicited AEs (Day 85)
ParticipantsStage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Stage 2: Number of Participants With Unsolicited AEs (Day 85)14548491346139231
PrimaryStage 1: Number of Participants With Deaths

Number of participants with deaths were reported.

Time frame:
Up to 36 months
Reported as:
Count of participants · Participants
Stage 1: Number of Participants With Deaths
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)
Stage 1: Number of Participants With Deaths0
PrimaryStage 2: Number of Participants With Deaths (Children and Adolescents)

Number of participants (children and adolescents) with deaths were reported.

Time frame:
Up to 12 months
Reported as:
Count of participants · Participants
Stage 2: Number of Participants With Deaths (Children and Adolescents)
ParticipantsStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Stage 2: Number of Participants With Deaths (Children and Adolescents)010010
PrimaryStage 2: Number of Participants With Deaths (Adults)

Number of participants (adults) with deaths were reported.

Time frame:
Up to 24 months
Reported as:
Count of participants · Participants
Stage 2: Number of Participants With Deaths (Adults)
ParticipantsStage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, Placebo
Stage 2: Number of Participants With Deaths (Adults)10
PrimaryStage 1: Number of Participants With Immediate Reportable Event (IREs)

Number of participants with IREs were reported. The following list of neuroinflammatory disorders are categorized as IREs: Cranial nerve disorders, including paralyses/paresis, optic neuritis, multiple sclerosis, transverse myelitis, guillain-Barré syndrome, acute disseminated encephalomyelitis, including site specific variants, myasthenia gravis and Lambert-Eaton myasthenic syndrome, immune-mediated peripheral neuropathies and plexopathies, narcolepsy, isolated paresthesia of greater than (\>) 7 days duration.

Time frame:
Up to 36 months
Reported as:
Count of participants · Participants
Stage 1: Number of Participants With Immediate Reportable Event (IREs)
ParticipantsStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)
Stage 1: Number of Participants With Immediate Reportable Event (IREs)0
PrimaryStage 2: Number of Participants With IREs (Children and Adolescents)

Number of participants (children and adolescents) with IREs were reported. The following list of neuroinflammatory disorders are categorized as IREs: Cranial nerve disorders, including paralyses/paresis, optic neuritis, multiple sclerosis, transverse myelitis, guillain-Barré syndrome, acute disseminated encephalomyelitis, including site specific variants, myasthenia gravis and Lambert-Eaton myasthenic syndrome, immune-mediated peripheral neuropathies and plexopathies, narcolepsy, isolated paresthesia of greater than (\>) 7 days duration.

Time frame:
Up to 12 months
Reported as:
Count of participants · Participants
Stage 2: Number of Participants With IREs (Children and Adolescents)
ParticipantsStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Stage 2: Number of Participants With IREs (Children and Adolescents)000000
PrimaryStage 2: Number of Participants With IREs (Adults)

Number of participants (adults) with IREs were reported. The following list of neuroinflammatory disorders are categorized as IREs: Cranial nerve disorders, including paralyses/paresis, optic neuritis, multiple sclerosis, transverse myelitis, guillain-Barré syndrome, acute disseminated encephalomyelitis, including site specific variants, myasthenia gravis and Lambert-Eaton myasthenic syndrome, immune-mediated peripheral neuropathies and plexopathies, narcolepsy, isolated paresthesia of greater than (\>) 7 days duration.

Time frame:
Up to 24 months
Reported as:
Count of participants · Participants
Stage 2: Number of Participants With IREs (Adults)
ParticipantsStage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, Placebo
Stage 2: Number of Participants With IREs (Adults)00
SecondaryStages 1 and 2: Geometric Mean Concentrations (GMCs) of Binding Antibody Levels Against Ebola Virus Glycoprotein (EBOV GP) Measured Using Enzyme-linked Immunosorbent Assay (ELISA)

GMCs of antibodies binding to EBOV GP using ELISA were reported and were measured in ELISA units per milliliter (EU/mL). Serum samples were collected for analysis of binding antibodies against EBOV GP using ELISA to determine humoral responses following vaccination. For ELISA binding antibody responses, values below the lower limit of quantification (LLOQ) (36.11 ELISA units/mL).

Time frame:
21 days post-dose 2 (Day 78)
Reported as:
Geometric mean · ELISA units/mL
Stages 1 and 2: Geometric Mean Concentrations (GMCs) of Binding Antibody Levels Against Ebola Virus Glycoprotein (EBOV GP) Measured Using Enzyme-linked Immunosorbent Assay (ELISA)
ELISA units/mLStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
Stages 1 and 2: Geometric Mean Concentrations (GMCs) of Binding Antibody Levels Against Ebola Virus Glycoprotein (EBOV GP) Measured Using Enzyme-linked Immunosorbent Assay (ELISA)4784 (3736 to 6125)3810 (3312 to 4383)50 (NA to 70)9929 (8172 to 12064)74 (48 to 114)10212 (8419 to 12388)42 (NA to 60)22568 (18426 to 27642)NA (NA to 38)

Adverse events

Collected over Stage 1: Up to 36 months, Stage 2 (Children and Adolescents): Up to 12 months, Stage 2 (Adults): Up to 24 months. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Stage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)0/43 (0%)3/43 (7%)22/43 (51.2%)
Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo1/298 (0.3%)16/298 (5.4%)194/298 (65.1%)
Stage 2 (>=18 Years): MenACWY, Placebo0/102 (0%)4/102 (3.9%)63/102 (61.8%)
Stage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-Filo0/143 (0%)0/143 (0%)56/143 (39.2%)
Stage 2 (12-17 Years): MenACWY, Placebo1/48 (2.1%)1/48 (2.1%)18/48 (37.5%)
Stage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-Filo0/144 (0%)5/144 (3.5%)69/144 (47.9%)
Stage 2 (4-11 Years): MenACWY, Placebo0/48 (0%)0/48 (0%)21/48 (43.8%)
Stage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-Filo1/144 (0.7%)15/144 (10.4%)108/144 (75%)
Stage 2 (1-3 Years): MenACWY, Placebo0/48 (0%)3/48 (6.3%)38/48 (79.2%)
Most frequent serious events
Showing 10 of 42
Most frequent serious events
EventStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
MalariaInfections and infestations0/433/2980/1020/1430/482/1440/4814/1442/48
SepsisInfections and infestations0/431/2980/1020/1430/480/1440/486/1440/48
GastroenteritisInfections and infestations0/432/2983/1020/1430/481/1440/480/1440/48
AnaemiaBlood and lymphatic system disorders0/431/2980/1020/1430/481/1440/484/1440/48
PneumoniaInfections and infestations0/430/2980/1020/1430/480/1440/484/1440/48
Retinal DetachmentEye disorders1/430/2980/1020/1430/480/1440/480/1440/48
Peptic UlcerGastrointestinal disorders1/430/2980/1020/1430/480/1440/480/1440/48
ChorioretinitisInfections and infestations1/430/2980/1020/1430/480/1440/480/1440/48
OrchitisInfections and infestations1/430/2980/1020/1430/480/1440/480/1440/48
ThrombocytopeniaBlood and lymphatic system disorders0/430/2980/1020/1430/480/1440/480/1441/48
Most frequent other events
Showing 10 of 16
Most frequent other events
EventStage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, Placebo
MalariaInfections and infestations6/43123/29840/10235/1439/4850/14414/4881/14426/48
HeadacheNervous system disorders9/4340/29813/10214/1432/484/1440/480/1440/48
Upper Respiratory Tract InfectionInfections and infestations1/4316/2988/1023/1431/489/1444/4826/1449/48
FuruncleInfections and infestations6/4311/2983/1022/1431/481/1442/486/1443/48
Respiratory Tract InfectionInfections and infestations2/4315/2984/1026/1432/484/1444/4817/1445/48
GastroenteritisInfections and infestations1/4310/2982/1021/1430/483/1442/487/1445/48
NasopharyngitisInfections and infestations0/4321/2985/1021/1430/485/1440/486/1445/48
Haemoglobin DecreasedInvestigations0/437/2982/1028/1435/483/1441/480/1440/48
PainGeneral disorders3/4316/29810/1023/1431/480/1441/480/1440/48
AnaemiaBlood and lymphatic system disorders1/432/2980/1021/1433/486/1444/4813/1441/48

Baseline characteristics

Age, Continuous
Age, Continuous(years)Stage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, PlaceboTotal
Mean26.9 ± 9.8727.5 ± 10.4629.6 ± 11.614.2 ± 1.5814 ± 1.587.7 ± 1.887.9 ± 1.961.9 ± 0.791.9 ± 0.7616.6 ± 12.79
Sex: Female, Male
Sex: Female, Male(Participants)Stage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, PlaceboTotal
Female15022692173266721350
Male4224880742771227727668
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Stage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, PlaceboTotal
Hispanic or Latino0000100001
Not Hispanic or Latino432981021434714448144481017
Unknown or Not Reported0000000000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Stage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, PlaceboTotal
American Indian or Alaska Native0000000000
Asian0000000000
Native Hawaiian or Other Pacific Islander0000000000
Black or African American432971021424714447144481014
White0101101004
More than one race0000000000
Unknown or Not Reported0000000000
Region of Enrollment
Region of Enrollment(Participants)Stage 1 (>=18 Years): Ad26.ZEBOV, MVA-BN-Filo (Ad26.ZEBOV)Stage 2 (>=18 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (>=18 Years): MenACWY, PlaceboStage 2 (12-17 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (12-17 Years): MenACWY, PlaceboStage 2 (4-11 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (4-11 Years): MenACWY, PlaceboStage 2 (1-3 Years): Ad26.ZEBOV, MVA-BN-FiloStage 2 (1-3 Years): MenACWY, PlaceboTotal
SIERRA LEONE432981021434814448144481018
08

Study locations

1 site
  • Freetown, Sierra Leone
09

References and documents

Publications

  • Ishola D, Manno D, Afolabi MO, Keshinro B, Bockstal V, Rogers B, Owusu-Kyei K, Serry-Bangura A, Swaray I, Lowe B, Kowuor D, Baiden F, Mooney T, Smout E, Kohn B, Otieno GT, Jusu M, Foster J, Samai M, Deen GF, Larson H, Lees S, Goldstein N, Gallagher KE, Gaddah A, Heerwegh D, Callendret B, Luhn K, Robinson C, Leyssen M, Greenwood B, Douoguih M, Leigh B, Watson-Jones D; EBL3001 study group. Safety and long-term immunogenicity of the two-dose heterologous Ad26.ZEBOV and MVA-BN-Filo Ebola vaccine regimen in adults in Sierra Leone: a combined open-label, non-randomised stage 1, and a randomised, double-blind, controlled stage 2 trial. Lancet Infect Dis. 2022 Jan;22(1):97-109. doi: 10.1016/S1473-3099(21)00125-0. Epub 2021 Sep 13. Erratum In: Lancet Infect Dis. 2023 Sep;23(9):e337. doi: 10.1016/S1473-3099(23)00488-7. PubMed 34529963 ↗
  • Afolabi MO, Ishola D, Manno D, Keshinro B, Bockstal V, Rogers B, Owusu-Kyei K, Serry-Bangura A, Swaray I, Lowe B, Kowuor D, Baiden F, Mooney T, Smout E, Kohn B, Otieno GT, Jusu M, Foster J, Samai M, Deen GF, Larson H, Lees S, Goldstein N, Gallagher KE, Gaddah A, Heerwegh D, Callendret B, Luhn K, Robinson C, Greenwood B, Leyssen M, Douoguih M, Leigh B, Watson-Jones D; EBL3001 study group. Safety and immunogenicity of the two-dose heterologous Ad26.ZEBOV and MVA-BN-Filo Ebola vaccine regimen in children in Sierra Leone: a randomised, double-blind, controlled trial. Lancet Infect Dis. 2022 Jan;22(1):110-122. doi: 10.1016/S1473-3099(21)00128-6. Epub 2021 Sep 13. PubMed 34529962 ↗
  • Mooney T, Smout E, Leigh B, Greenwood B, Enria L, Ishola D, Manno D, Samai M, Douoguih M, Watson-Jones D. EBOVAC-Salone: Lessons learned from implementing an Ebola vaccine trial in an Ebola-affected country. Clin Trials. 2018 Oct;15(5):436-443. doi: 10.1177/1740774518780678. Epub 2018 Jun 12. PubMed 29895178 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 18, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02509494
Collaborators
London School of Hygiene and Tropical Medicine, Ministry of Health and Sanitation, Sierra Leone, University of Sierra Leone, University of Oxford, Institut National de la Santé Et de la Recherche Médicale, France, Grameen Foundation, World Vision, Ireland
Responsible party
Sponsor
First posted
Jul 28, 2015
Start date
Sep 30, 2015
Primary completion
Jun 28, 2019
Completion
Jul 3, 2019
Results posted
Jul 18, 2022
Last update
Jul 18, 2022

Study contacts

Janssen Vaccines & Prevention B.V. Clinical Trial
study director · Janssen Vaccines & Prevention B.V.

Oversight

Data monitoring committee
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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