14. Public Awareness
Phage typing (another way to characterize Salmonella) of the S. Typhimurium isolates identified the isolates as Definitive Type 120 (DT120). S. Typhimurium DT120 is often multi-drug resistant and may possess antibiotic-resistance gene cassettes also found in S. Typhimurium DT104. Selective pressure for any one of these five antibiotics in the cassette selects for the entire cassette of resistance genes.