Case Study

Nigeria – Prison Screening with OneStopTB Mobile

WoW truck used in Nigeria on a TB screening day

At Kano Central Correctional Center, a high-risk TB transmission setting, the deployment of the OneStop TB Mobile Clinic significantly improved TB case finding, diagnosing 21 cases in just two weeks compared to 7 in the previous year.

TB screening setting

TB case finding at Kano Central Correctional Center in a high-risk setting for transmission of TB.

OneStop TB Mobile Clinic

The WoW (Wellness on Wheels) truck deployed for inmate screening.

X-ray screening with CAD4TB
Chest X-rays supported by CAD4TB were used to identify presumptive TB cases.

Identification of presumptive TB
Individuals with a CAD4TB score of ≥60 and/or TB symptoms were classified as presumptive TB cases.

Result

1,967 (98%) were screened with X-rays using CAD4TB. Of these,

9 2 (5%)
were presumptive TB cases
23 % TB yield
among presumptive TB cases
2 1 people
were diagnosed with TB
2 1 TB cases
identified over 2 weeks
  • The intervention was highly effective and significantly increased TB case finding.
  • Over two weeks, 21 TB cases were identified, compared with seven cases detected over the previous year.
WoW truck used in Nigeria on a TB screening day
Conclusion
  • Mobile TB screening with CAD4TB was highly effective in a correctional setting.
  • The intervention significantly increased TB case detection within a short timeframe.
  • Deploying the WoW mobile clinic improved access to timely TB diagnosis in a high-transmission environment.

REFERENCE: The 52nd UNION conference “Report of an outbreak of Tuberculosis in Kano Central Correctional Center, Kano, Nigeria”, Tukur et al., KNCV Nigeria.