Background: Salmonella Schwarzengrund (antigenic formula 1,4,12,27:d:1,7) is a serovar of the O:4 (B) serogroup. S. Schwarzengrund is among the most common serovars in non-clinical non-human spurces sources in the US. MDR strains (e.g., resistant to dihydrostreptomycin, kanamycin, oxytetracycline, bicozamycin, trimethoprim, and sulfadimethoxine) have been linked with to broilers in Japan. In addition, fluoroquinolone resistant strains are have been linked to imported food from Asia. For example, multidrug-resistant MDR S. Schwarzengrund has been were found to be transmitted from chickens to persons in some countries in Asia (Thailand), and from imported Thai food products to persons not only in Denmark, but also in the United States.
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