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 in the US. MDR strains (e.g., resistant to dihydrostreptomycin, kanamycin, oxytetracycline, bicozamycin, trimethoprim, and sulfadimethoxine) have been linked with broilers in Japan. In addition,fluoroquinolone resistant strains are linked to imported food from Asia. For example, multidrug-resistant S. Schwarzengrund has been 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.
Animal reservoir: Poultry is the main reservoir of S. Schwarzengrund
Geographical distribution: S. Schwarzengrund is prevalent in Asia and it has been found in Europe and the US as well.
Outbreaks: Outbreaks associated with S. Schwarzengrund have been reported in the US; in addition, in Denmark cases have been linked to thai food products.
Year |
Location |
Associated source |
Number of cases |
2007 |
US- New Jersey |
Probably exposure to poultry from live bird-market |
5 |
2007 |
US- Massachusetts |
Probably exposure to poultry from live bird-market |
62 |
2007 |
US-multistate |
Pet dry food |
79 |
1996 |
US-Oregon |
Person-person |
11 |
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