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Related Experiment Videos

Bacteriophage typing in Salmonella bareilly

N C Sharma1, R Bhatia, S Singh

  • 1National Salmonella and Escherichia Centre, Central Research Institute, Kasauli, India.

Epidemiology and Infection
|February 1, 1994
PubMed
Summary

This study phage typed 675 Salmonella Bareilly strains from India and France, identifying 23 distinct phage types. The Salmonella typing system proved reproducible, stable, and epidemiologically valuable.

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Area of Science:

  • Microbiology
  • Epidemiology
  • Bacteriology

Background:

  • Salmonella Bareilly is an important foodborne pathogen.
  • Phage typing is a crucial method for differentiating bacterial strains.
  • Understanding the diversity of Salmonella Bareilly is essential for epidemiological surveillance.

Purpose of the Study:

  • To phage type a large collection of Salmonella Bareilly strains.
  • To establish a reproducible and stable phage typing system for Salmonella Bareilly.
  • To assess the epidemiological utility of the developed phage typing system.

Main Methods:

  • A total of 675 Salmonella Bareilly strains from India and France (1959-1992) were analyzed.
  • Six specific bacteriophages were employed for the phage typing process.

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  • Simpson's diversity index was calculated to quantify strain diversity.

    • Main Results:

    • An overall typability of 90.8% was achieved, identifying 23 distinct phage types.
    • Phage types were systematically defined using an octal code.
    • A high diversity index (0.839) indicated significant strain variation.

    Conclusions:

    • The developed phage typing system for Salmonella Bareilly is reproducible and stable.
    • The system demonstrated significant epidemiological usefulness for tracking bacterial strains.
    • Phage typing provides valuable insights into the population structure of Salmonella Bareilly.