Case finding is the identification of presumptive TB, either by clinical signs and symptoms or Chest X-ray, followed by diagnosis of active TB disease through bacteriological testing or clinical diagnosis.
Presumptive TB can be identified through systematic screening in health facilities, or amongst targeted populations in congregate setting, community or workplace by using either symptom-based screening, Chest X-ray or both. The bacteriological test recommended is a rapid diagnostic test (e.g. Xpert MTB/Rif).
