Table 1.

Summary of IPC interventions based on a three-level hierarchy of controls

Administrative controls	Environmental controls	Personal respiratory protection
Triage and isolation of people (with presumed or confirmed TB infection)	Ventilation systems  Natural  Mechanical  Mixed-mode  Recirculated air through HEPA filters	Particulate respirators (N95 or FFP2)
Prompt initiation of effective treatment
Respiratory hygiene (including cough etiquette)	GUV systems  Germicidal lamps  Upper-room GUV	Respirator fit testing
Management of HCWs (including education and training)

The recommendations listed above were summarised from the WHO 2019 guidelines on TB IPC [3]. HCWs, healthcare workers; HEPA, high-efficiency particulate air (filters); GUV, germicidal ultraviolet