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Published on: June 11, 2011
Characteristics of tuberculosis in HIV-infected patients: a case-control study
E Soriano1, J Mallolas, J M Gatell
1Infectious Disease Unit, Hospital Clinic, University of Barcelona, Spain.
Abstract:
To test the hypothesis that HIV infection can modify the clinical characteristics of tuberculosis, 65 consecutive cases of tuberculosis in HIV-seropositive patients diagnosed in Barcelona (Spain) were compared with 65 HIV-seronegative controls matched for age and sex. Thirty of the 65 cases were accepted as AIDS cases (August 1987 Centers for Disease Control criteria) only because of the tuberculosis. Among the cases 54 (83%) were parenteral drug addicts and 88% were males. The tuberculosis was pulmonary or pleural in 62 controls (96%) but in only 25 cases (39%; P less than 0.0001). Lymph nodes were involved in 25 cases (39%) and in none of the controls (P less than 0.0001). Disseminated forms of tuberculosis were present in seven cases (11%) and in no controls (P less than 0.007). Bone, joints and central nervous system involvement were also significantly (P less than 0.05) more frequent in cases. The treatment (isoniazid and rifampin for 6 months plus ethambutol and pyrazinamide during the first 2 months) was always effective. One relapse was detected after a median follow-up of 55 months in cases and none in controls after a median follow-up of 43 months. Twenty-five cases (39%) and 14 controls (22%) developed mild or severe side effects related to the treatment (P less than 0.004). In conclusion, most of the HIV-infected patients with tuberculosis were drug addicts with extrapulmonary or disseminated forms. A short course of treatment (6 or 9 months) may be enough but side effects were frequent.
Insights
Human immunodeficiency virus (HIV) infection significantly alters tuberculosis presentation, often leading to extrapulmonary and disseminated forms, particularly in drug addicts. Treatment was effective, but side effects were common in HIV-positive patients.
Area of Science:
- Infectious Diseases
- Public Health
- Clinical Medicine
Background:
- Tuberculosis (TB) is a major opportunistic infection in individuals with human immunodeficiency virus (HIV).
- Understanding how HIV impacts TB clinical characteristics is crucial for diagnosis and management.
Purpose of the Study:
- To investigate the clinical differences in tuberculosis presentation between HIV-seropositive and HIV-seronegative individuals.
- To assess the treatment efficacy and side effects in HIV-infected TB patients.
Main Methods:
- A comparative study of 65 HIV-seropositive TB patients and 65 matched HIV-seronegative TB controls.
- Clinical characteristics, including TB localization and form, were analyzed.
- Treatment outcomes and adverse events were monitored.
Main Results:
- HIV-seropositive patients frequently presented with extrapulmonary (39%) and disseminated (11%) TB, unlike controls (0%).
- Parenteral drug addiction was common (83%) among HIV-TB cases.
- Treatment was effective, but side effects were significantly more frequent in HIV-positive patients (39% vs 22%).
Conclusions:
- HIV infection profoundly modifies tuberculosis presentation, favoring extrapulmonary and disseminated forms, especially in drug users.
- Short-course TB treatment appears effective but is associated with a higher incidence of side effects in HIV-infected individuals.
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