Call for Life: Exploring mHealth Solutions for Enhancing Childhood Vaccinations Among Displaced Children in Conflict-affected Settings of Nigeria

NCT07154836 | Enrolling By Invitation

• 2 other identifiers: Call-4-LifeNot application
• Study Type: interventional
• Target: 366
• Locations: 1 country
• Sites: 1

Brief Summary

This study evaluates the feasibility and preliminary impact of Call for Life, an mHealth platform aimed at increasing childhood vaccination coverage among internally displaced persons in Borno State, Nigeria. The platform uses an interactive voice response (IVR) system to deliver automated vaccination reminders, follow up on reported side effects, and provide health messages in English and local languages. A mixed-methods design is used to assess feasibility, interaction rates, and early effects on vaccine uptake. Findings will inform policymakers and humanitarian actors on the potential of mobile technology to strengthen immunization delivery in conflict-affected, resource-limited settings.

Conditions

Access to Immunization

Keywords

Immunization; mhealth

Outcome Measures

Primary Outcomes (2)

• Number of zero-dose children aged 0-23 months vaccinated and registered in an immunization registry at the health facility

  Number of zero-dose children aged 0-23 months vaccinated and registered in an immunization registry at the health facility. The immunization registry which will be used by the health facility to follow up with parents for the vaccination schedules of the children

  6 months

• Number of care givers to children aged 0-23 months who receive reminder calls from the call for life platform and take their children to the health facility for immunization

  Number of care givers to children aged 0-23 months who receive reminder calls from the call for life platform and take their children to the health facility for immunization and registration into an immunization registry

  6 months

Study Arms (1)

Call4life

EXPERIMENTAL

Care givers will be reminded using telephone calls to go vaccine their children

Other: Telephone calls

Interventions

Telephone calls OTHER

Regular telephone reminders and health information will be sent to help mothers or caregivers of children 0-23 months to remind them to go vaccine their children

Also known as: Call4life

Call4life

Eligibility Criteria

• Age: 23 Months - 23 Months
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17)

You may qualify if:

• Caregivers (male/female) of children from 0-23 months of age or pregnant women in third trimester
• Caregivers above the age of 18 years of age
• Caregivers who consent to participate in the study.
• Resident in the IDP camp for at least one year

You may not qualify if:

• Pregnant women in third trimester in first pregnancy (primigravida)
• Caregivers that are temporary residents of the IDP camps (IDPs on transit or visitors)
• Caregivers without the mental capacity to comprehend the questions asked.
• Inability to use or interact with a mobile phone ( e.g. those with hearing defects or poor vision)

Sponsors & Collaborators

• University of Cambridge: lead
• University of Maiduguri: collaborator
• Infectious Disease Institute at Makerere University: collaborator

Study Sites (1)

El Miskin

Jere, Borno State, Nigeria

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: HEALTH SERVICES RESEARCH
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Dr

Study Record Dates

• First Submitted: August 15, 2025
• First Posted: September 4, 2025
• Study Start: June 24, 2025
• Primary Completion: November 24, 2025
• Study Completion: December 30, 2025
• Last Updated: September 4, 2025

Record last verified: 2025-08

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP
• Time Frame: January 2025 to December 2025
• Access Criteria: Only researchers involved in the study will have access to IPD

Locations

NG (1)