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Processing of Bronchoalveolar Lavage Fluid and Matched Blood for Alveolar Macrophage and CD4+ T-cell Immunophenotyping and HIV Reservoir Assessment
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Processing of Bronchoalveolar Lavage Fluid and Matched Blood for Alveolar Macrophage and CD4+ T-cell Immunophenotyping and HIV Reservoir Assessment

Published on: June 23, 2019

Pneumocystis pneumonia in HIV-positive adults, Malawi

Joep J G van Oosterhout1, Miriam K Laufer, M Arantza Perez

  • 1University of Malawi College of Medicine, Blantyre, Malawi.

Emerging Infectious Diseases
|May 8, 2007
PubMed

Insights

Pneumocystis pneumonia (PcP) is uncommon in Malawian adults with HIV, despite being more frequent in those with lower CD4 counts. Other infections like tuberculosis are more common.

Area of Science:

  • Infectious Diseases
  • Immunology
  • Public Health

Background:

  • HIV/AIDS remains a significant public health concern in sub-Saharan Africa.
  • Pneumocystis jirovecii pneumonia (PcP) is an opportunistic infection common in immunocompromised individuals.
  • Understanding PcP incidence in HIV-positive populations is crucial for clinical management and resource allocation.

Purpose of the Study:

  • To determine the incidence of Pneumocystis jirovecii pneumonia (PcP) in a cohort of HIV-positive adults in Malawi.
  • To investigate the relationship between CD4+ T-cell counts and PcP diagnosis.
  • To compare the incidence of PcP with other common pulmonary infections in this population.

Main Methods:

  • Prospective study involving 660 HIV-positive Malawian adults.
  • Diagnosis of PcP utilized clinical assessment, induced sputum analysis (immunofluorescent staining), and real-time PCR.
  • Posttreatment follow-up was conducted to confirm diagnoses and outcomes.

Main Results:

  • Pneumocystis jirovecii pneumonia (PcP) was diagnosed in the study cohort.
  • PcP incidence demonstrated a clear correlation with lower CD4+ T-cell counts.
  • However, PcP was found to be relatively uncommon when compared to the incidence of pulmonary tuberculosis and bacterial pneumonia.

Conclusions:

  • Pneumocystis jirovecii pneumonia (PcP) is an infrequent diagnosis among HIV-positive adults in Malawi.
  • Lowest CD4 counts are associated with increased PcP risk.
  • Pulmonary tuberculosis and bacterial pneumonia are more prevalent in this population.

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