Clinical trial NCT01174849: Pneumococcal Vaccines Early and in Combination
Official title: A Randomised Controlled Trial of Pneumococcal Conjugate Vaccines Synflorix and Prevenar13 in Sequence or Alone in High-risk Indigenous Infants (PREV-IX_COMBO): Immunogenicity, Carriage and Otitis Media Outcomes
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Otitis Media
Keywords: otitis media
pneumococcal vaccines
randomised controlled trial
high-risk children
indigenous
Australia
Lead sponsor: Menzies School of Health Research
Sponsor class: OTHER
First posted: 2010-08-04
Enrollment: 425
Sex: ALL
Minimum age (years): 28
Maximum age (years): 38
Standard ages: CHILD
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: The purpose of this study is to determine whether an early schedule of a combination of three doses of PHiD-CV and one dose of PCV13, is superior to three doses of either PCV13 or PHiD-CV.

Detailed description: Aboriginal children in the Northern Territory (NT) have high rates of otitis media caused by non-capsular H. influenzae (NCHi) and pneumococci. Pneumococcal conjugate vaccine has effectively reduced disease caused by the 7 serotypes. Rates of non-vaccine serotype otitis media (OM), particularly 19A is increasing, and NCHi continues to be a major pathogen in perforations. Parallels with pneumonia are highly probable in this population. Vaccines with expanded and early age protection are needed.

In early 2009 GSK's pneumococcal H. influenzae protein D conjugate vaccine (PHiD-CV) was licensed in Australia. Compared to the current vaccine, 7PCV, this vaccine offers protection from pneumococcal serotypes 1, 5, 7F as well as NCHi (which is a primary pathogen of OM, and possibly pneumonia). However by 2010, a new generation of Wyeth's 7PCV, PCV13 will also be licensed in Australia. Compared to PHiD-CV this vaccine offers protection from additional serotypes 3, 6A and 19A, however it does not offer protection from NCHi infection. There is no empirical evidence to suggest that either vaccine will have superior clinical efficacy for otitis media or pneumonia in high-risk children. The novel combination strategy proposed for this trial has the potential to provide the best of both vaccines.

Eligibility criteria: Inclusion Criteria:

Indigenous infants

* 4 to 6 weeks of age
* Living in remote communities that have provided signed Expressions of Interest in participating in PREV-IX_COMBO trial
* Intend to remain in their community until their baby is 7 months of age
* Eligible for routine vaccinations.

Exclusion Criteria:

* Prior adverse reaction to pneumococcal conjugate vaccines according to Australian Immunization Handbook.
* Gestational age \< 32 weeks

Primary outcomes:
measure: Immunogenicity
timeFrame: 7 months of age
Secondary outcomes:
measure: nasopharyngeal carriage
timeFrame: 7 months of age
measure: nasopharyngeal carriage
timeFrame: 7 months of age
measure: otitis media
timeFrame: 7 months of age
Other outcomes:
Locations:
city: Darwin
country: Australia
facility: Menzies School of Health Research
state: Northern Territory
Study officials:
affiliation: Menzies School of Health Research
name: Amanda J Leach, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Morris PS, Leach AJ, Silberberg P, Mellon G, Wilson C, Hamilton E, Beissbarth J. Otitis media in young Aboriginal children from remote communities in Northern and Central Australia: a cross-sectional survey. BMC Pediatr. 2005 Jul 20;5:27. doi: 10.1186/1471-2431-5-27.
citation: Leach AJ, Morris PS. The burden and outcome of respiratory tract infection in Australian and aboriginal children. Pediatr Infect Dis J. 2007 Oct;26(10 Suppl):S4-7. doi: 10.1097/INF.0b013e318154b238.
citation: Leach AJ, Morris PS, Mathews JD; Chronic Otitis Media Intervention Trial - One (COMIT1) group. Compared to placebo, long-term antibiotics resolve otitis media with effusion (OME) and prevent acute otitis media with perforation (AOMwiP) in a high-risk population: a randomized controlled trial. BMC Pediatr. 2008 Jun 2;8:23. doi: 10.1186/1471-2431-8-23.
citation: Leach AJ, Morris PS, Mackenzie G, McDonnell J, Balloch A, Carapetis J, Tang M. Immunogenicity for 16 serotypes of a unique schedule of pneumococcal vaccines in a high-risk population. Vaccine. 2008 Jul 23;26(31):3885-91. doi: 10.1016/j.vaccine.2008.05.012. Epub 2008 May 27.
citation: Leach AJ, Morris PS, McCallum GB, Wilson CA, Stubbs L, Beissbarth J, Jacups S, Hare K, Smith-Vaughan HC. Emerging pneumococcal carriage serotypes in a high-risk population receiving universal 7-valent pneumococcal conjugate vaccine and 23-valent polysaccharide vaccine since 2001. BMC Infect Dis. 2009 Aug 4;9:121. doi: 10.1186/1471-2334-9-121.
citation: Mackenzie GA, Carapetis JR, Leach AJ, Morris PS. Pneumococcal vaccination and otitis media in Australian Aboriginal infants: comparison of two birth cohorts before and after introduction of vaccination. BMC Pediatr. 2009 Feb 19;9:14. doi: 10.1186/1471-2431-9-14.
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citation: Smith-Vaughan H, Byun R, Nadkarni M, Jacques NA, Hunter N, Halpin S, Morris PS, Leach AJ. Measuring nasal bacterial load and its association with otitis media. BMC Ear Nose Throat Disord. 2006 May 10;6:10. doi: 10.1186/1472-6815-6-10.
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citation: Leach AJ, Wilson N, Arrowsmith B, Beissbarth J, Mulholland EK, Santosham M, Torzillo PJ, McIntyre P, Smith-Vaughan H, Chatfield MD, Lehmann D, Binks M, Chang AB, Carapetis J, Krause V, Andrews R, Snelling T, Skull SA, Licciardi PV, Oguoma VM, Morris PS. Immunogenicity, otitis media, hearing impairment, and nasopharyngeal carriage 6-months after 13-valent or ten-valent booster pneumococcal conjugate vaccines, stratified by mixed priming schedules: PREVIX_COMBO and PREVIX_BOOST randomised controlled trials. Lancet Infect Dis. 2022 Sep;22(9):1374-1387. doi: 10.1016/S1473-3099(22)00272-9. Epub 2022 Jun 27.
citation: Leach AJ, Mulholland EK, Santosham M, Torzillo PJ, McIntyre P, Smith-Vaughan H, Wilson N, Arrowsmith B, Beissbarth J, Chatfield MD, Oguoma VM, Morris PS. Otitis media outcomes of a combined 10-valent pneumococcal Haemophilus influenzae protein D conjugate vaccine and 13-valent pneumococcal conjugate vaccine schedule at 1-2-4-6 months: PREVIX_COMBO, a 3-arm randomised controlled trial. BMC Pediatr. 2021 Mar 8;21(1):117. doi: 10.1186/s12887-021-02552-z.
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