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[Familial microepidemics of tuberculosis]
R Vidal Pla1, R Roca Tey, M Miravitlles
1Servicio de Neumología, Hospital General Vall d'Hebron, Barcelona.
Medicina Clinica
|July 7, 1990
Summary
A family tuberculosis (TBC) outbreak occurred in 4 parenteral drug abusers and 3 individuals with anti-human immunodeficiency virus (HIV) antibodies. This highlights the need for household contact tracing and chemoprophylaxis in TBC and HIV co-infection cases.
Area of Science:
- Public Health
- Infectious Diseases
- Epidemiology
Background:
- Tuberculosis (TBC) remains a significant global health challenge, particularly in vulnerable populations.
- Human immunodeficiency virus (HIV) infection is a known risk factor for TBC reactivation and transmission.
- Parenteral drug abuse is associated with increased risk of infectious diseases, including TBC and HIV.
Observation:
- A microepidemic of TBC was identified within a family of 12 members.
- Four family members were parenteral drug abusers, and three had anti-HIV antibodies.
- Four new TBC cases were diagnosed during contact tracing of a patient with extrapulmonary TBC and acquired immunodeficiency syndrome (AIDS).
Findings:
- The study identified a high-risk environment for TBC transmission within a family unit.
- Positive anti-HIV antibodies were associated with an increased risk of developing TBC.
- Simultaneous diagnosis of multiple TBC cases suggests efficient household transmission.
Implications:
- Systematic contact investigation within families affected by TBC is crucial for early detection and control.
- Chemoprophylaxis should be considered for all household contacts, irrespective of age, in TBC and HIV co-infection scenarios.
- Understanding the interplay between TBC, HIV, and drug abuse is vital for targeted public health interventions.