From Tuberculosis › Chapter 15: Follow-up of staff exposed to tuberculosis · Médecins Sans Frontières, Current online edition, 2026
MSF guidance on BCG vaccination for healthcare and other staff with occupational TB exposure.
- Issuer
- Médecins Sans Frontières
- Edition
- Current online edition, 2026
- Audience
- Occupational health services, TB programme managers, infection prevention and control teams
- Evidence
- Evidence-based recommendations with systematic review citation
- Reviewed
- 23 Oct 2026 · GMJ
What this guideline says
GMJ summary
This section of the MSF tuberculosis guideline addresses BCG vaccination for staff occupationally exposed to tuberculosis. Recommendations vary internationally, with some countries requiring BCG vaccination for previously unvaccinated, TST-negative staff. MSF notes limited evidence for BCG vaccination benefits in adults without prior vaccination.
Vaccination should be considered case-by-case in high-risk scenarios: significant exposure to multidrug-resistant TB (MDR-TB) in treatment facilities, detention centres or high-prevalence areas, and whilst corrective actions are implemented following MDR-TB transmission to staff or when infection prevention and control (IPC) measures are inadequate. Staff must be counselled on benefits, risks, impact on future TST interpretation for latent TB infection diagnosis, and that BCG does not confer complete protection.
BCG should only be administered to individuals who have never been vaccinated, are HIV-negative, not pregnant, have no history of active TB, and have a negative TST result.
Key points
For clinicians — doses and thresholds as stated in the guideline
- Consider BCG vaccination case-by-case for staff with significant exposure to MDR-TB in treatment facilities, detention centres or high-prevalence areas
- Vaccinate whilst corrective actions are implemented after MDR-TB transmission to staff has occurred or when IPC measures are inadequate
- Only vaccinate staff who have never had BCG vaccination previously
- Require negative HIV test, negative TST result, and no history of active TB before vaccination
- Do not vaccinate pregnant staff
- Counsel staff that BCG vaccination affects future TST interpretation for diagnosing latent TB infection
- Inform staff that BCG does not confer complete protection and TB may still occur if IPC measures are not applied
From the guideline
Verbatim
“BCG vaccine should only be administered if the person: Has never had a BCG vaccination. Has a HIV test negative result. Is not pregnant. Has never had active TB. Has a TST negative result.”
Editor’s perspective
Why this matters for Georgia and the region
Prof. Giorgi Pkhakadze, MD, MPH, PhD
Editor-in-Chief, Georgian Medical Journal · Chair, Public Health Institute of Georgia · WHO consultant, health and migration
As Chair of Georgia's Public Health Institute, I recognise the direct relevance of these MSF recommendations for our TB programme, particularly given documented MDR-TB in Georgian healthcare facilities and penitentiary settings. I would stress to Georgian clinicians the five absolute eligibility criteria before BCG administration and the critical requirement for case-by-case risk assessment rather than blanket vaccination policies. The caveat for implementation is that many Georgian facilities lack reliable occupational health surveillance systems to identify staff with significant MDR-TB exposure, and HIV testing uptake amongst healthcare workers remains suboptimal, potentially limiting systematic application of these screening requirements before vaccination.
ORCID 0000-0001-7609-4515 · Perspective written for the GMJ Guidelines Library, 23 Oct 2026
Applicability
Georgia and the South Caucasus
Georgia has intermediate TB burden with documented MDR-TB prevalence, making these recommendations directly relevant for healthcare facilities, prisons and TB treatment centres. National occupational health programmes should review current BCG vaccination policies for staff in high-risk settings, ensure availability of TST and HIV testing before vaccination, establish protocols for case-by-case risk assessment in MDR-TB exposure situations, and integrate BCG vaccination decision-making with infection prevention and control strengthening efforts. The guidance is equally applicable across Armenia and Azerbaijan where MDR-TB remains a public health concern.
Questions this guideline answers
Quick answers
Who should receive BCG vaccination for occupational TB exposure?
Consider case-by-case for staff with significant MDR-TB exposure in treatment facilities, detention centres or high-prevalence areas, and whilst corrective actions address inadequate IPC measures or after MDR-TB transmission to staff has occurred.
What are the absolute requirements before giving BCG to staff?
Staff must have never had BCG vaccination, have negative HIV test, negative TST result, no history of active TB, and not be pregnant.
Does BCG vaccination provide complete protection against TB?
No. BCG does not confer complete protection and TB may still occur if IPC measures are not applied. This must be explained to staff being considered for vaccination.
How does BCG vaccination affect future TB screening?
BCG vaccination impacts the interpretation of TST results in diagnosing potential latent TB infection. Staff should be counselled on this before vaccination to understand implications for future screening.
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Quality & accreditation
Same guideline
- Preventive measures at patients' homes — MSF TuberculosisChapter 14: Infection prevention and control
- Respiratory protection measures in health facilities — MSF TuberculosisChapter 14: Infection prevention and control
- Environmental Measures in Health Facilities — MSF TuberculosisChapter 14: Infection prevention and control
- Administrative measures in health facilities — MSF TuberculosisChapter 14: Infection prevention and control
- Tuberculosis infection prevention and control (Chapter 14.1: Introduction) — MSF TuberculosisChapter 14: Infection prevention and control
- Therapeutic patient education and patient support services — MSF TuberculosisChapter 13: Adherence to tuberculosis treatment
Other guidelines on this topic
- Preventive measures at patients' homes — MSF Tuberculosis
- Respiratory protection measures in health facilities — MSF Tuberculosis
- Environmental Measures in Health Facilities — MSF Tuberculosis
- Administrative measures in health facilities — MSF Tuberculosis
- Tuberculosis infection prevention and control (Chapter 14.1: Introduction) — MSF Tuberculosis
- Issuer
- Médecins Sans Frontières
- Guideline
- Tuberculosis
- Chapter
- Chapter 15: Follow-up of staff exposed to tuberculosis
- Type
- Clinical guideline (chapter)
- Edition
- Current online edition, 2026
- Status
- Current
- Published
- 2026-10-14
- Scope
- Healthcare and other staff with occupational exposure to tuberculosis
- Audience
- Occupational health services, TB programme managers, infection prevention and control teams
- Evidence
- Evidence-based recommendations with systematic review citation
- Record history
- Created 23 Oct 2026 · updated 23 Oct 2026 · next check Apr 2027
Médecins Sans Frontières. BCG vaccination. In: Tuberculosis [guideline]. Paris: MSF; 2026. Section 15.3, Chapter 15: Follow-up of staff exposed to tuberculosis.GMJ Guidelines Library records are original summaries written by the GMJ editorial team from the issuer’s published document and reviewed by a physician. They do not replace the full guideline. The document is the copyright of its issuer and is linked, not hosted. Spotted an error or a newer edition? Tell the Guidelines Desk.
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