Epidemiologic typing of nosocomial microorganisms

Area of Science:

• Microbiology
• Epidemiology
• Genetics

Background:

• Hospital epidemiologists utilize microorganism typing to ascertain genetic relatedness.
• Standard clinical laboratories offer biotyping and antibiograms; specialized labs provide advanced methods like phage typing and DNA analysis.

Purpose of the Study:

• To outline the essential characteristics of effective microorganism "typing" systems.
• To propose the establishment of a registry for typing methods.

Main Methods:

• Review of existing microorganism typing techniques used in clinical microbiology and specialized laboratories.
• Identification of key criteria for a useful and effective typing system.

Main Results:

• An effective typing system must be standardized, reproducible, sensitive, stable, available, inexpensive, broadly applicable, and field-tested.
• Current typing methods include biotyping, antibiograms, serotyping, phage typing, and DNA analyses.

Conclusions:

• A standardized approach to microorganism typing is crucial for accurate epidemiologic investigations.
• A registry of typing methods is recommended to facilitate their appropriate application and improve the understanding of microbial genetic relatedness in healthcare settings.