Pneumococcal Conjugate Vaccine Followup

NCT ID: NCT01414504

Last Updated: 2012-09-17

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

280 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-12-31

Study Completion Date

2012-09-30

Brief Summary

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Recently, controversy has emerged regarding the role of the 23vPPV in infants due to potential immunological hypo-responsiveness (i.e. a poorer immune response to repeat vaccination). Although previous experience of 23vPPV in children in PNG has demonstrated protective efficacy against acute lower respiratory tract infection, the investigators feel it is a matter of urgency to determine if 23vPPV administration provides elevated antibody concentrations at 3 to 5 years of age, and to ensure the immunological safety of the 23vPPV in infants.

Following consent and eligibility assessment, a baseline blood sample and nose swab will be taken, a 0.1ml dose of 23vPPV will be administered and a follow up blood sample and nose swab will be collected 28 days later. The investigators will also collect data on incidence of ALRI in all study participants by medical record review.

Detailed Description

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Conditions

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Immune Tolerance

Keywords

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pneumococcal, pneumococcal polysaccharide vaccine, challenge dose, hyporesponsiveness, Papua New Guinea

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Neonatal PCV + PPV 9 months

Group 1: Children receiving 7VPCV at 0-1-2 months of age and PPV at 9 months of age

Group Type ACTIVE_COMPARATOR

Prevenar + PPV

Intervention Type BIOLOGICAL

0.5mL dose of Prevenar at 0-1-2 months, 0.5mL Pneumovax at 9 months and 0.1mL Pneumovax at 3-5 yrs

Infant PCV + PPV at 9 months

Group 2: Children receiving 7VPCV at 1-2-3 months of age and PPV at 9 months of age

Group Type ACTIVE_COMPARATOR

Infant PCV (Prevenar) + PPV at 9 months

Intervention Type BIOLOGICAL

0.5mL Prevenar at 1-2-3 months,0.5mL Pneumovax (PPV) at 9 months, 0.1mL Pneumovax at 3-5 yrs

No PCV + PPV at 9 months

Group 3: Children who only received PPV at 9 months of age

Group Type ACTIVE_COMPARATOR

No Prevenar + PPV at 9 months

Intervention Type BIOLOGICAL

no Prevenar, 0.5mL Pneumovax at 9 months, 0.1mL Pneumovax at 3-5 yrs

Control

Group 4: Children who have not received any previous pneumococcal vaccine

Group Type ACTIVE_COMPARATOR

Control

Intervention Type BIOLOGICAL

control, 0.1mL Pneumovax at 3-5yrs

Interventions

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Prevenar + PPV

0.5mL dose of Prevenar at 0-1-2 months, 0.5mL Pneumovax at 9 months and 0.1mL Pneumovax at 3-5 yrs

Intervention Type BIOLOGICAL

Infant PCV (Prevenar) + PPV at 9 months

0.5mL Prevenar at 1-2-3 months,0.5mL Pneumovax (PPV) at 9 months, 0.1mL Pneumovax at 3-5 yrs

Intervention Type BIOLOGICAL

No Prevenar + PPV at 9 months

no Prevenar, 0.5mL Pneumovax at 9 months, 0.1mL Pneumovax at 3-5 yrs

Intervention Type BIOLOGICAL

Control

control, 0.1mL Pneumovax at 3-5yrs

Intervention Type BIOLOGICAL

Other Intervention Names

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Prevenar Pneumovax23

Eligibility Criteria

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Inclusion Criteria

* PNG Infants aged 3 to 5 yrs of age who participated in previous PNG Neonatal PCV study and received PPV between 9 and 12 months of age, or age- and sex-matched controls who live in the same villages or urban area
* Informed parental/guardian consent

Exclusion Criteria

* Known HIV infection or other immunosuppressive condition or treatment.
* Prior receipt of 2 doses of pneumococcal polysaccharide vaccine
Minimum Eligible Age

3 Years

Maximum Eligible Age

5 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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The University of Western Australia

OTHER

Sponsor Role collaborator

William Pomat

OTHER_GOV

Sponsor Role lead

Responsible Party

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William Pomat

Senior Research Fellow

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Peter C Richmond, MD

Role: PRINCIPAL_INVESTIGATOR

School of Paediatrics and Child Health, University of Western Australia

Deborah Lehmann, MSc

Role: PRINCIPAL_INVESTIGATOR

Telethon Institute for Child Health Research

William S Pomat, PhD

Role: PRINCIPAL_INVESTIGATOR

Papua New Guinea Institute of Medical Research

Locations

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PNG Institute of Medical Research

Goroka, Eastern Highlands Province, Papua New Guinea

Site Status

Countries

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Papua New Guinea

References

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van den Biggelaar AHJ, Richmond PC, Fuery A, Anderson D, Opa C, Saleu G, Lai M, Francis JP, Alpers MP, Pomat WS, Lehmann D. Pneumococcal responses are similar in Papua New Guinean children aged 3-5 years vaccinated in infancy with pneumococcal polysaccharide vaccine with or without prior pneumococcal conjugate vaccine, or without pneumococcal vaccination. PLoS One. 2017 Oct 13;12(10):e0185877. doi: 10.1371/journal.pone.0185877. eCollection 2017.

Reference Type DERIVED
PMID: 29028802 (View on PubMed)

Other Identifiers

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PCVFU927

Identifier Type: -

Identifier Source: org_study_id