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Healthcare Associated Infections I: Iatrogenic, Exogenic and Endogenic

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Healthcare-associated infections (HAIs) occur in a healthcare facility while a person receives care for another ailment. This category also includes work-related infections among healthcare staff.
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Pneumonia I: Introduction

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Updated: Jun 26, 2026

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria

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Published on: February 23, 2014

[Nosocomial infections: main causative agents].

C S Boye¹, A I Sow

¹profisow@orange.sn

Dakar Medical

|December 24, 2008

Summary

Nosocomial infections are caused by diverse agents including bacteria, viruses, and fungi. Identifying the specific causative agent requires rigorous analysis beyond simple isolation.

Area of Science:

Infectious Diseases
Microbiology
Public Health

Background:

Nosocomial infections, acquired in healthcare settings, pose significant risks.
These infections can stem from a wide array of pathogens, including bacteria, viruses, fungi, and parasites.

Purpose of the Study:

To provide essential data on the primary causative agents of nosocomial infections.
To highlight the spectrum of microbial and other agents responsible for healthcare-associated infections.

Main Methods:

Review of existing literature and epidemiological data.
Analysis of reported causative agents in nosocomial infection cases.

Main Results:

Bacteria, particularly Enterobacteria, Staphylococcus, and Pseudomonas, are prevalent. Legionella is significant in certain regions.

Related Experiment Videos

Last Updated: Jun 26, 2026

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria

Published on: February 23, 2014

Multidrug-resistant bacteria are frequently implicated in severe nosocomial infections.

Viruses (e.g., RSV, Hepatitis B/C, HIV, Influenza), fungi (Aspergillus, Candida), parasites (Plasmodium), and prions are also identified as causative agents.

Conclusions:

Isolation of an infectious agent from a hospitalized patient is insufficient for definitive nosocomial infection typing.
Comprehensive and rigorous case-by-case analysis is crucial for accurate diagnosis and management.