*2.1. Bacterial Strains*

The study was conducted on 3 *Salmonella enterica* strains isolated in 2017 from poultry meat, representing different serovars: *S. enteritidis*, *S. typhimurim* and *S. virchow* (most commonly identified salmonellosis serovars in Poland and Europe). Study strains represented different phage types (DTs) (*S. enteritidis*–DT8 (commonly associated with consumption of eggs), *S. typhimurim*–DT2), for *S.* Virchow phage type could not be determined.
