Case Study

South Africa and Zambia – Prevalence Survey using OneStopTB Clinic

TREATS Mobile clinic

TB prevalence surveys were conducted in urban and peri-urban areas with high HIV prevalence to improve understanding of TB burden and support timely diagnosis.

Community-based prevalence survey

Mobile field sites were established in each community to support TB prevalence screening.

OneStopTB Mobile Clinic deployment

The OneStopTB Clinic was equipped with digital X-ray, CAD4TB with cloud connectivity, and an on-board laboratory.

AI-supported image analysis

Digital chest X-rays were analyzed using CAD4TB to support detection of TB and non-TB abnormalities.

On-site molecular testing

GeneXpert testing was performed in the mobile clinic laboratory.

Conclusion
  • “Digital X-rays provided excellent image quality… also, an advantage was that using the CAD enabled to peak non-TB abnormalities”.
  • Thanks to the lab installed in the truck, results were ready within 24 hours; no need for sputum sample transportation to external sites.
TREATS Mobile clinic

REFERENCE: “Practical considerations for conducting a TB Prevalence Survey using the OneStopTB platform in Zambia and South Africa”, Chali Wapamesa & Michael Burnett, TREAT Study, presented at Delft Imaging’s Webinar on 14th October 2021.