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[Rhodococcus equi pulmonary abscess in HIV infection]
I About1, B Castan, J Capdeville
1Service de médecine interne, hôpital de Foix, France.
Abstract:
RE is a well-known Gram positive bacillus which is usually pathogenic in animals. Disease in humans is rare, but incidence has clearly increased with the advent of AIDS. In humans, RE predominantly infect people with impaired cellular immunity so that it is considered an opportunistic agent. Its must common manifestation in immuno-compromised patients is a slowly progressive pneumonia which may cavitate. Even with early diagnostic and optimal and prolonged antibiotic therapy, the mortality of RE, infections remain high (20 to 55%). Problems in clinical and therapic management are illustrated in our two cases of cavitated pneumonia in two AIDS patients.
Insights
Rhodococcus equi (RE) is a Gram-positive bacillus that causes opportunistic infections, primarily pneumonia, in immunocompromised individuals, especially those with AIDS. Despite treatment, RE infections have a high mortality rate, highlighting challenges in clinical management.
Area of Science:
- Microbiology
- Infectious Diseases
- Immunology
Background:
- Rhodococcus equi (RE) is a Gram-positive bacillus typically pathogenic in animals.
- Human infections by RE are rare but increasing, particularly in individuals with Acquired Immunodeficiency Syndrome (AIDS).
- RE is considered an opportunistic agent, predominantly affecting those with impaired cellular immunity.
Observation:
- The most common manifestation of RE in immunocompromised patients is a slowly progressive pneumonia that can lead to cavitation.
- The study presents two cases of cavitated pneumonia caused by RE in patients with AIDS.
- These cases illustrate difficulties in the clinical and therapeutic management of RE infections.
Findings:
- RE infections, particularly cavitated pneumonia, present significant clinical challenges.
- Despite prompt diagnosis and prolonged antibiotic therapy, mortality rates for RE infections remain high, ranging from 20% to 55%.
Implications:
- The findings underscore the need for improved diagnostic and therapeutic strategies for Rhodococcus equi infections in immunocompromised populations.
- Increased vigilance and research are necessary to reduce the high morbidity and mortality associated with RE opportunistic infections.
- Understanding the clinical course and management challenges of RE pneumonia in AIDS patients is crucial for better patient outcomes.