Abstract
Salmonella enterica is the most common foodborne pathogen found in poultry processing and slaughterhouses; therefore, understanding the resistance of this bacteria group is critical for effective pathogen control. This research in Vietnam provides a new field for studying resistance to biocides and disinfectants, along with the distribution of genes coding for this characteristic in Salmonella species members. According to the Clinical and Laboratory Standards Institute (CLSI) guidelines, 119 strains of Salmonella bacteria underwent testing for minimum inhibitory concentration (MIC) with two compounds, BKC (benzalkonium chloride) and CPC (cetylpyridinium chloride). Moreover, these Salmonella strains were further characterised based on the genes responsible for disinfectant resistance. The results showed that the MICs of BKC and CPC were between 12.5-25 and 6.25-12.5 μg/ml, respectively. Furthermore, the presence of two genes, qacEand qacE∆, discovered in 61% (73/119) and 60% (72/119) of the strains, indicates the wide spread of disinfectant resistance genes is a novelty in the resistance of this bacteria group.
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