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NCT04123119

Development of a Live Attenuated Rotavirus Vaccine as a Human Infection Challenge Model

Completed NA Last updated 14 October 2019
What this trial tests

NA trial testing Rotavirus vaccine in Diarrhoeal Disease in 22 participants. Completed in 10 May 2019.

Timeline
22 January 2019
Primary endpoint
10 May 2019
10 May 2019

Quick facts

Lead sponsorCentre for Infectious Disease Research in Zambia
PhaseNA
StatusCompleted
Study typeINTERVENTIONAL
Allocationna
Designsingle group
Maskingnone
Primary purposeprevention
Enrollment22
Start date22 January 2019
Primary completion10 May 2019
Estimated completion10 May 2019
Sites1 location across Zambia

Drugs / interventions tested

Conditions studied

Sponsor

Centre for Infectious Disease Research in Zambia — full company profile →

Who can join

Adults 6 Weeks to 8 Weeks, any sex, with Diarrhoeal Disease. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The impact of licensed rotavirus vaccines in LMICs is limited by their lower immunogenicity and efficacy in these settings. Improved vaccines and vaccination schedules would result in substantially greater reductions in infant diarrhoeal disease and mortality. Placebo-controlled trials of new rotavirus vaccines are no longer ethical, leading to challenges for traditional routes of licensure for vaccines that are in the development pipeline. A HIC model of rotavirus would address these challenges, whilst also offering an opportunity to study the causes of poor oral vaccine immunogenicity. Rotarix™ is in routine use in Zambia administered at 6 and 10 weeks infant age. Shedding of rotavirus vaccine after vaccination has recently been explored as a measure of mucosal immunity, analogous to oral poliovirus vaccine challenge models. We propose to explore methodological development of an attenuated vaccine as a HIC model to advance rotavirus immunology and vaccinology in Zambian infants. We will evaluate use of minimally invasive procedures including sublingual/submandibular sampling and stool collection for viral shedding as measures of vaccine-induced and naturally acquired mucosal immunity. This approach holds the potential to develop the first rotavirus HIC model in a low-income country and could be used to accelerate licensure of new rotavirus vaccines and explore causes of poor oral vaccine efficacy as well as correlates of vaccine protection. To do this, we will recruit a cohort of 22 Zambian infants receiving Rotarix™ at 6 and 10 weeks as part of their routine immunisation. Infants will be followed up actively on the day of vaccination, days 1,3,5 and 7 following each vaccine dose for collection of stool and saliva samples. Blood samples for IgA and IgG titres will be collected on days 0, 28, 31 and 56, and standard ELISA methods used to determine vaccine seroconversion. The work brings together collaborators at the Centre for Infectious Disease Research in Zambia, Imperial College in UK and Christian Medical College, Vellore in India to prepare the Zambian centre as a potential HIC model site.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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Other trials of Rotavirus vaccine

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Data sources for this page

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Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing