Overview

The Integrated Service Delivery (ISD) Program – TBR-10/Dastak unifies TB, COVID-19, hepatitis C, and mental health services in rural Sindh. By combining mobile clinics, tele-mental health support, AI-assisted screening, and community engagement, ISD improves access to diagnosis, treatment, and psychosocial care for vulnerable populations. The program addresses structural and socio-cultural barriers in under-resourced districts, ensuring that patients receive comprehensive, patient-centred care across multiple infectious diseases while reducing stigma and treatment non-compliance. The ISD program is operational in three districts of Sindh—Mirpurkhas, Tando Allahyar, and Tharparkar—with services delivered through mobile clinics, telehealth platforms, and community outreach to reach patients in under-resourced and hard-to-access areas.

5,169

individuals eligible for mental health assessment

4,761

mental health assessments conducted

128

individuals initiated counselling

54

individuals completed counselling

The Need

The Need

Tuberculosis remains a major global health challenge

Tuberculosis remains a major global health challenge, particularly in high-burden settings where identifying populations at highest risk of infection is critical for targeted prevention and vaccine development.

There is limited site-level data on latent TB infection and operational readiness for large-scale vaccine trials. This project addresses these gaps by generating epidemiological evidence and strengthening site capacity for participant recruitment, follow-up, retention, and biological sample processing.

Our Approach

Epidemiological Assessment

  • Measurement of IGRA positivity among high-risk populations
  • Analysis of TB infection prevalence across different sites and groups
  • Monitoring changes in IGRA positivity over time
  • Assessment of TB disease development among participants

Participant Recruitment and Follow-Up

  • Recruitment of participants aged 15–34 years from high-burden settings
  • Inclusion of three groups:
    • General community populations
    • Targeted high-risk groups (e.g., healthcare workers, students)
    • Household contacts of TB cases
  • Remote follow-ups every 2 months
  • Facility visits every 6 months up to 30 months

Clinical and Laboratory Procedures

  • Blood sample collection for:
    • IGRA testing
    • HIV testing
    • Biomarker analysis
  • Sputum testing using culture and Xpert Ultra for suspected TB cases
  • Urine sample collection for biomarker testing
  • Clinical evaluation during scheduled and unscheduled visits

Capacity Building for Vaccine Trials

  • Strengthening site capacity for participant recruitment and retention
  • Establishing systems for sample collection, processing, and data quality
  • Assessing operational feasibility for future Phase 3 TB vaccine trials

Our partners

PDI has a nationwide footprint, focusing on districts identified by the national STH survey— 47 at-risk districts requiring annual deworming.

The Drivers Behind Our Impact

The Drivers Behind Our Impact

Integrated research and capacity building

Combining epidemiological data collection with site strengthening

Focus on high-risk populations

Targeting groups most vulnerable to TB infection

Standardized study protocols

Ensuring high-quality clinical and laboratory data

Longitudinal follow-up

Enabling tracking of infection dynamics over time

Global collaboration

Contributing to multi-country evidence generation for TB vaccine development

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Evidence-based solutions. Lasting impact.

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