Case Study

Nigeria – TB screening among inmates

A closeup of Delft Light

TB screening using Delft Light with CAD4TB was implemented across correctional facilities to improve TB detection among inmates. The intervention achieved a high diagnostic yield, particularly in medium-security custodial centers, highlighting the importance of targeted screening in overcrowded settings.

TB screening in correctional facilities

Active TB screening was conducted among inmates in correctional centers across multiple states.

Using ultra-PDX with CAD4TB

Delft Light with CAD4TB were deployed under the USAID-supported New Tools project.

Team-based screening deployment

Three two-person teams equipped with Delft Light Backpack and CAD4TB screened inmates across 16 prisons.

Identification and evaluation of presumptive TB

Individuals with CAD4TB scores above 50 were evaluated using Xpert MTB/RIF Ultra and clinical assessment.

Result

From December 2021 to February 2022, three 2-person teams, each equipped with the DLB and CAD4TB, were deployed to screen all inmates in 16 prisons across the states. Across all prisons, 4,920 inmates were screened

87 % of inmates
screened in five medium-security custodial centers
9.4 % presumptive TB yield
in medium-security centers
6.9 % presumptive TB yield
in satellite custodial centers
  • A total of 72 cases were diagnosed, of which 67 (93%) were from MSCC.
  • TB yield amongst screened inmates in MSCCs was twice.
A closeup of Delft Light
Conclusion
  • The Nigerian Correctional Service and relevant health authorities should institute measures to decongest overcrowded centers.
  • This is necessary to reduce the spread of infectious diseases such as tuberculosis in congregate settings.

REFERENCE: M. Tukur et al. (2022, November 8-11). Early experience from the Portable Digital X-ray implementation in special populations in Kano and Katsina states, Nigeria; lessons learnt and recommendations for scale up. The Union World Conference on Lung Health 2022.