SynthesisBMC infectious diseases2026
Factors associated with severity of pulmonary tuberculosis in people living with and without HIV: a systematic review.
Synthesis in BMC infectious diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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8 authors.
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Abstract
introductionTuberculosis is a leading infectious cause of death and morbidity in people with and without HIV. Better identification of severe forms could help target early interventions to reduce mortality and severe morbidity. Existing severity scores do not fully take into account important disease characteristics such as bacillary load, extent of lung involvement, and disease dissemination, and most of them were not developed specifically for people living with HIV. We sought to identify factors associated with tuberculosis severity described in the literature in order to propose a consensus based multifactorial tuberculosis severity score for people living with HIV.
methodsThe review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) approach. We searched for baseline data associated with tuberculosis severity defined as mortality, severe morbidity, treatment failure or sequelae, in participants aged ≥ 15 years.
resultsIn 117 articles selected, the most commonly reported severity factors were host-related or mixed (older age, anaemia, immunosuppression, comorbidities, low body mass index, fever, tachycardia, dyspnoea, low blood pressure, or social factors). There were also factors related to bacillary load (high smear positivity level or culture positivity), extent of lung involvement (cavitation, bilateral location, or infiltration to more than 2 lobes) and disease dissemination (LAM+, extra pulmonary involvement, miliary or disseminated tuberculosis).
conclusionThis review identified many factors associated with tuberculosis severity, host-related or related to both the host and tuberculosis. It also brought evidence that TB severity is related as well to key disease characteristics such as bacillary load, extent of lung involvement and disease dissemination. It will be used to develop a specific tuberculosis severity score for people living with HIV based on the Rand Appropriateness Method. The systematic review protocol was registered in the Prospective Register of Systematic Reviews (PROSPERO, CRD42022323983). CLINICAL TRIAL NUMBER: Not applicable.
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