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ProVac:Probiotic adjuvant to enhance the efficacy of pnemococcal vaccination: A pilot study.

A randomised double blind, placebo-controlled trial to evaluate the efficacy of a probiotic adjuvant in enhancing vaccine immune responses in healthy infants aged 3-7 months.

Status
Not yet recruiting
Phases
Phase 1
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12613000368730
Acronym
ProVac
Enrollment
30
Registered
2013-04-08
Start date
2013-04-16
Completion date
2013-05-28
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This pilot study aims to develop a new approach to improve protection against pneumococcal disease, using a probiotic (Bifidobacterium Bi-07) to boost immune responses to and reduce invasion by the pneumococcal bacteria. We are particularly interested in whether Bifidobacterium lactis Bi-07 given early in life, together with vaccination, can improve protection against pneumococcal infection and therefore reduce disease. This study will involve 30 babies and the use of Bifidobacterium lactis Bi-07 is currently experimental.

Interventions

To evaluate the adjuvant effect of B.lactis Bi-07 on the immune response to pneumococcal conjugate (PCV13) vaccination in healthy infants. The probiotic powder is freeze-dried Bifidobacterium Bi-07 and silicon dioxide.The probiotic will be mixed with 10mls of cooled boiled water and administered orally via a syringe. Packaged in 1.0 gram white sachets, 100 per carton. The probiotic will be administered once daily. Once infants have been recruited, the study period will be 6 months from the fi

To evaluate the adjuvant effect of B.lactis Bi-07 on the immune response to pneumococcal conjugate (PCV13) vaccination in healthy infants. The probiotic powder is freeze-dried Bifidobacterium Bi-07 and silicon dioxide.The probiotic will be mixed with 10mls of cooled boiled water and administered orally via a syringe. Packaged in 1.0 gram white sachets, 100 per carton. The probiotic will be administered once daily. Once infants have been recruited, the study period will be 6 months from the first day of treatment (at 4 weeks of age) until 7 months of age which spans the 3-dose PCV13 schedule (at 2,4,6 months). Compliance to the probiotic treatment will be monitored by a study diary that will completed by the parents/guardians on a daily basis. As this is a pilot study, we will also be able to determine feasibility of compliance during the study period and develop appropriate strategies to maintain this.

Sponsors

Associate Professor Mimi Tang
Lead SponsorIndividual

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
4 Weeks to 7 Months
Healthy volunteers
Yes

Inclusion criteria

1) Healthy, term infants (post-delivery) will be recruited from the postnatal maternity ward at the Royal Women's Hospital, Melbourne. 2 )The infant must be 4 weeks of age. 3) The infant must be born via a vaginal birth at 37 weeks or greater gestation. 4) The mother cannot have been on antibiotic treatment 2 weeks prior to delivery.

Exclusion criteria

1) Mothers who were taking probiotics during pregnancy or are on probiotic supplements. 2) Mothers who have a proven or suspected immunodeficiency. 3) Infants must not have had a probiotic. 4) Infants who have a significant foetal abnormality. 5) Infants who have or a proven or suspected immunodeficiency. 6)Significant maternal illness or disability such that study participation would impose an unacceptable additional burden. 7) Planning or likely to leave the area before the study finishes.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026