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An outbreak of Pneumocystis carinii pneumonia in children with malignancy
Y F Cheung1, C F Chan, C W Lee
1University Paediatric Unit, Queen Mary Hospital, University of Hong Kong.
Insights
An outbreak of Pneumocystis pneumonia (PCP) occurred in immunocompromised patients. Chemoprophylaxis and isolation are recommended to prevent further transmission and reduce severe outcomes.
Area of Science:
- Infectious Diseases
- Oncology
- Immunology
Background:
- Pneumocystis pneumonia (PCP) is a serious opportunistic infection.
- Immunocompromised patients, particularly those with hematologic malignancies or brain tumors, are at high risk.
- The study investigates an outbreak of PCP in a hospital setting.
Observation:
- Three cases of PCP occurred within six weeks in patients with acute lymphoblastic leukemia and brain-stem glioma.
- All affected patients exhibited immunosuppression and lacked cotrimoxazole prophylaxis.
- The patients were housed in the same room, suggesting potential nosocomial transmission.
Findings:
- The severity of PCP and treatment response may correlate with the degree of immunosuppression.
- The outbreak highlights the risk of PCP in vulnerable patient populations.
- Nosocomial transmission of PCP is a significant concern.
Implications:
- Routine chemoprophylaxis with agents like cotrimoxazole is crucial for all at-risk individuals.
- Patient isolation protocols should be considered to mitigate PCP's spread in healthcare settings.
- Enhanced surveillance and infection control measures are necessary to prevent future outbreaks.
Abstract:
An outbreak of Pneumocystis carinii pneumonia (PCP) in three patients within a 6 week period was reported. Two patients had acute lymphoblastic leukaemia and one had brain-stem glioma. They shared common features of immunosuppression and absence of cotrimoxazole prophylaxis and had been nursed in the same room. The severity of PCP and its response to treatment may be related to the degree of immunosuppression. Because of the morbidity and mortality of PCP, chemoprophylaxis should be given to all at-risk cases. Furthermore, isolation of patients with PCP should be considered in view of increasing evidence of nosocomial transmission.