Tuberculous meningitis and co-infection with HIV

Area of Science:

• Pediatric Infectious Diseases
• Neuroinfectious Diseases
• HIV/AIDS Research

Background:

• Tuberculous meningitis (TBM) is a severe form of tuberculosis affecting the central nervous system.
• The co-infection of HIV and tuberculosis presents unique challenges in diagnosis and management, particularly in children.
• Limited comparative data exists on the clinical, radiological, and outcome differences between HIV-seronegative and HIV-infected children with TBM.

Purpose of the Study:

• To compare the clinical, laboratory, and radiological features of TBM in HIV-seronegative versus HIV-infected children.
• To evaluate the impact of HIV co-infection on the presentation, neuroimaging findings, and treatment outcomes of pediatric TBM.

Main Methods:

• Retrospective comparison of 30 HIV-seronegative children with TBM against 10 HIV-infected children with TBM.
• Analysis of clinical, laboratory (Mantoux test), and radiological (CT brain) features.
• Assessment of treatment outcomes including mortality and long-term neurological handicaps.

Main Results:

• HIV-infected children were younger, had shorter symptom duration, and were more frequently Mantoux-negative (23% vs. 70%).
• CT scans revealed more ventricular enlargement (80% vs. 63%), gyral enhancement (60% vs. 17%), and cerebral atrophy (40% vs. 17%) in HIV-infected children.
• Outcomes were significantly worse for HIV-infected children: 30% mortality versus 0% in HIV-negative children, with higher rates of moderate/severe handicaps.

Conclusions:

• While clinical presentations were similar, HIV co-infection led to more severe neuro-radiological findings in pediatric TBM.
• HIV infection significantly worsens the prognosis of TBM in children, associated with increased mortality and disability.
• HIV encephalopathy and diminished immune competence likely contribute to the more severe disease course observed in co-infected children.