Effect of 2 versus 3 pneumococcal conjugate vaccinations Prevnar on nasopharyngeal carriage, transmission and herd immunity; a randomized, controlled study.
ISRCTN | ISRCTN25571720 |
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DOI | https://doi.org/10.1186/ISRCTN25571720 |
ClinicalTrials.gov number | NCT00189020 |
Secondary identifying numbers | MINOES 01, STEG R05 008 |
- Submission date
- 20/12/2005
- Registration date
- 20/12/2005
- Last edited
- 31/05/2019
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Infections and Infestations
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Plain English summary of protocol
Not provided at time of registration
Contact information
Prof E.A.M. Sanders
Scientific
Scientific
University Medical Center Utrecht
Department of Pediatric Immunology
HP 06.063.0
P.O. Box 85090
Lundlaan 6
Utrecht
3508 AB
Netherlands
Phone | +31 (0)30 2504000 |
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l.sanders@umcutrecht.nl |
Study information
Study design | Randomised controlled trial |
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Primary study design | Interventional |
Secondary study design | Randomised controlled trial |
Study setting(s) | Not specified |
Study type | Not Specified |
Scientific title | Effect of 2 versus 3 pneumococcal conjugate vaccinations Prevnar on nasopharyngeal carriage, transmission and herd immunity; a randomized, controlled study. |
Study acronym | MINOES |
Study objectives | Study hypotheses amended as of 22/05/2007: 1. Two vaccinations with 7-valent conjugate vaccine before six months of age will protect against invasive pneumococcal disease in the first 18 to 24 months of life 2. Two vaccinations at 2 and 4 months of age without a booster vaccination at 11 months will have less effect on vaccine-type pneumococcal carriage reduction and therefore also herd-immunity and respiratory tract infections but also less pneumococcal replacement by non-vaccine types and other potentially pathogenic bacteria 3. Anti-pneumococcal antibody development after two vacinations with 7-valent conjugate vacine before six months of age and revaccination at 24 months of age will be equal or better compared with antibody development after two vaccination before six months of age followed by booster vaccination at 11 and 24 months of age. Later vaccination will improve long term protection Previous study hypothesis: 1. Two vaccinations before the age of 6 months with the pneumococcal conjugate vaccine Prevnar in infants will protect the children against invasive pneumococcal disease. 2. Two vaccinations at 2 and 4 months of age without a booster vaccination at 11 months will have less effect on vaccine-type pneumococcal carriage reduction and therefore also herd-immunity and respiratory tract infections but also less pneumococcal replacement by non-vaccine types and other potentially pathogenic bacteria. |
Ethics approval(s) | Approval received from the local medical ethics board (Stichting Therapeutische Evaluatie Geneesmiddelen [STEG], acknowledged by the Centrale Commissie Mensgebonden Onderzoek [CCMO], The Netherlands) on the 21st June 2005 (ref: STEG R05.008, version 6). First and second amendment (collection of saliva for immunological analysis and extension microbiology research of collected nasopharyngeal swabs in subgroups of children) approved on the 11th September 2006. Third amendment (addition of booster vaccination at 24 months and blood sampling) approved on the 2nd March 2007 (ref: STEG R05-008, MINOES version 8 dd february 2007). |
Health condition(s) or problem(s) studied | Invasive pneumococcal disease, Respiratory tract infection. Added as of 22/05/2007: Change in: nasopharyngeal carriage after reduced doses 7-valent conjugate vaccine, antipneumococcal antibody development, family transmission of pneumococci |
Intervention | Three groups of each 333 newborns: Group I: Prevnar at age 2 and 4 months Group II: Prevnar at age 2, 4 and 11 months Group III: Prevnar at age 24 months Amendment made as of 22/05/2007: Groups I and II will receive booster vaccination 7-valent conjugate vaccine at 24 months of age. |
Intervention type | Drug |
Pharmaceutical study type(s) | |
Phase | Not Specified |
Drug / device / biological / vaccine name(s) | Pneumococcal conjugate vaccine Prevnar |
Primary outcome measure | Pneumococcal nasopharyngeal carriage before 2 months of age, and at 6, 12, 18 and 24 months of age in vaccinated children (groups I and II) and controls (group III), and NP pneumococcal carriage of siblings and parents/caregivers when the baby is 12 and 24 months of age (herd immunity). |
Secondary outcome measures | 1. Determination of pneumococcal (vaccine and non-vaccine serotypes) colonization of infants in the Netherlands before introduction of Prevnar in the National Vaccination Program (group III) 2. Evaluation of replacing pneumococcal serotypes after Prevnar vaccinations 3. Influence of Prevnar vaccinations on other colonizing bacterial species like Staphylococcus, H. influenzae, M. catarrhalis and Streptococcus 4. Anti pneumococcal antibody levels at 12 and 24 months after 2 doses as compared to 2+1 Prevnar vaccinations 5. Relation between invasive pneumococcal disease and pneumococcal colonization in the Netherlands 6. Evaluation of potential reduction of physician-diagnosed acute otitis media and lower respiratory tract infections after pneumococcal conjugate vaccinations Added as of 22/05/2007: 7. Comparison of anti-pneumococcal antibody levels after vaccinations at 2, 4 and 24 months, at 2, 4, 11 and 24 months and after primo-vaccination at 24 months of age in subgroups of 80 children of groups I, II and III 8. Comparison of B-memory cells after vaccination at 24 months of age after vaccination schemes of groups I, II and III |
Overall study start date | 20/06/2005 |
Completion date | 01/03/2008 |
Eligibility
Participant type(s) | Patient |
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Age group | Neonate |
Sex | Both |
Target number of participants | 1000 |
Total final enrolment | 1003 |
Key inclusion criteria | 1000 healthy newborns (and family members) who will receive childhood vaccinations according to the national vaccination program, starting at 2 months of age. |
Key exclusion criteria | Exclusion from the national vaccination program because of the presence of a medical condition requiring treatment that can interfere with the results of vaccinations, known of suspected allergy to components of the vaccine, known or suspected immunodeficiency disease other than IgA or IgG-subclass deficiency, previous treatment with plasma or immunoglobulins, previous vaccinations other than hepatitis B vaccinations, coagulations disorders |
Date of first enrolment | 20/06/2005 |
Date of final enrolment | 01/03/2008 |
Locations
Countries of recruitment
- Netherlands
Study participating centre
University Medical Center Utrecht
Utrecht
3508 AB
Netherlands
3508 AB
Netherlands
Sponsor information
University Medical Centre Utrecht (UMCU) (Netherlands)
University/education
University/education
PO Box 85500
Utrecht
3508 GA
Netherlands
Website | http://www.umcutrecht.nl/zorg/ |
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https://ror.org/04pp8hn57 |
Funders
Funder type
Government
The Netherlands Ministry of Health, Welfare and Sport (The Netherlands)
No information available
Results and Publications
Intention to publish date | |
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Individual participant data (IPD) Intention to share | No |
IPD sharing plan summary | Not provided at time of registration |
Publication and dissemination plan | Not provided at time of registration |
IPD sharing plan |
Study outputs
Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
---|---|---|---|---|---|
Results article | results | 01/09/2011 | 31/05/2019 | Yes | No |
Results article | results | 01/12/2014 | 31/05/2019 | Yes | No |
Results article | results | 01/08/2014 | 31/05/2019 | Yes | No |
Results article | results | 02/12/2013 | 31/05/2019 | Yes | No |
Results article | results | 01/12/2011 | 31/05/2019 | Yes | No |
Results article | results | 01/02/2014 | 31/05/2019 | Yes | No |
Results article | results | 08/07/2009 | 31/05/2019 | Yes | No |
Results article | results | 08/09/2010 | 31/05/2019 | Yes | No |
Editorial Notes
31/05/2019: The following changes were made:
1. Publication reference added.
2. Total final enrolment added.
3. Clinicaltrials.gov number added.