Reduced set of phages for typing salmonellae

Area of Science:

• Microbiology
• Bacteriology
• Epidemiology

Background:

• Salmonella species (spp.) are significant foodborne pathogens.
• Accurate differentiation of Salmonella serovars is crucial for public health surveillance.
• Phage typing has historically been used for bacterial strain characterization.

Purpose of the Study:

• To describe a phage set for differentiating Salmonella spp.
• To establish reproducible phage patterns for Salmonella serovar identification.
• To demonstrate the utility of phage typing in epidemiological investigations.

Main Methods:

• A collection of 27 phages was utilized for typing.
• 1,245 Salmonella cultures representing various groups were analyzed.
• Phage patterns were observed and recorded for each culture.

Main Results:

• All 1,245 cultures were successfully typed.
• A total of 420 distinct phage patterns were identified.
• The phage typing results were reproducible across multiple tests.

Conclusions:

• The described phage set is effective for differentiating Salmonella spp.
• Observed phage patterns correlate with epidemiological data from various outbreaks.
• This method provides a reliable tool for Salmonella surveillance and outbreak investigation.