Septicaemia in patients with AIDS

Area of Science:

• Infectious Diseases
• Immunology
• Clinical Microbiology

Background:

• Septicaemia presents a significant challenge in patients with human immunodeficiency virus (HIV) infection, including those with acquired immune deficiency syndrome (AIDS).
• Understanding the spectrum of pathogens causing septicaemia in HIV-infected individuals is crucial for effective clinical management and public health strategies.

Purpose of the Study:

• To identify the common causative agents of septicaemia in patients with AIDS and non-AIDS-associated HIV infections at St Stephen's Hospital, London.
• To compare the observed patterns of septicaemia with findings from other international centres and identify potential contributing factors to variations.

Main Methods:

• Retrospective analysis of patient records over a 5-year period at St Stephen's Hospital.
• Identification and categorization of pathogens causing septicaemia in patients diagnosed with AIDS and HIV infection.
• Review and comparison with existing literature on HIV-associated septicaemia patterns globally.

Main Results:

• In patients with AIDS, the most frequent pathogens identified were Mycobacterium avium-intracellulare, Streptococcus pneumoniae, Pseudomonas aeruginosa, Cryptococcus neoformans, and staphylococci.
• Septicaemia in non-AIDS-associated HIV infections was also observed, with varying etiological agents reported across different international centres.
• Salmonella species were noted as a prominent cause in several reports, and an increase in intravenous line-associated septicaemia in patients receiving parenteral therapy was observed.

Conclusions:

• The spectrum of pathogens causing septicaemia in HIV-infected patients, particularly those with AIDS, is diverse and includes opportunistic infections.
• Variations in septicaemia patterns internationally may be influenced by socio-economic factors, ethnicity, predisposing conditions, and diagnostic methods.
• The increasing incidence of intravenous line-related septicaemia underscores the need for vigilant infection control measures in immunocompromised patients.