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‘One Health’ investigation: outbreak of human Salmonella Braenderup infections traced to a mail-order hatchery – United States, 2012–2013

  • J. H. NAKAO (a1), J. PRINGLE (a2), R. W. JONES (a3), B. E. NIX (a3), J. BORDERS (a4), G. HESELTINE (a4), T. M. GOMEZ (a5), B. McCLUSKEY (a5), C. S. RONEY (a6), D. BRINSON (a6), M. ERDMAN (a7), A. McDANIEL (a8) and C. BARTON BEHRAVESH (a2)...

Summary

Human salmonellosis linked to contact with live poultry is an increasing public health concern. In 2012, eight unrelated outbreaks of human salmonellosis linked to live poultry contact resulted in 517 illnesses. In July 2012, PulseNet, a national molecular surveillance network, reported a multistate cluster of a rare strain of Salmonella Braenderup infections which we investigated. We defined a case as infection with the outbreak strain, determined by pulsed-field gel electrophoresis, with illness onset from 25 July 2012–27 February 2013. Ill persons and mail-order hatchery (MOH) owners were interviewed using standardized questionnaires. Traceback and environmental investigations were conducted. We identified 48 cases in 24 states. Twenty-six (81%) of 32 ill persons reported live poultry contact in the week before illness; case-patients named 12 different MOHs from eight states. The investigation identified hatchery D as the ultimate poultry source. Sampling at hatchery D yielded the outbreak strain. Hatchery D improved sanitation procedures and pest control; subsequent sampling failed to yield Salmonella. This outbreak highlights the interconnectedness of humans, animals, and the environment and the importance of industry knowledge and involvement in solving complex outbreaks. Preventing these infections requires a ‘One Health’ approach that leverages expertise in human, animal, and environmental health.

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Copyright

Corresponding author

* Author for correspondence: J. H. Nakao, MD, MPH, CGH/DGHP/Emergency Response and Recovery Branch, Centers for Disease Control and Prevention, 4770 Buford Hwy, MS-F-57, Atlanta, GA 30341, USA. (Email: jnakao@cdc.gov)

References

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