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Background: Salmonella enterica subsp. enterica serovar Infantis (antigenic formula 6,7,14:r:1,5) is a serovarhttps://www.cdc.gov/salmonella/backyardpoultry-05-24/index.html of the O:7 (C₁) serogroup. S. Infantis is commonly found in chickens and  broiler flocks. In addition, outbreaks caused by S. Infantis have been associated with pet food and treats. In European countries, a multidrug-resistant (MDR) strain of S. Infantis was disseminated; this strain emerged from broilers in Hungary (Hungarian clone of S. Infantis). Resistant pattern of this Hungarian clone included resistance to: nalidixic acid, streptomycin, sulphonamide, and tetracycline. In Italy, an MDR strain of S. Infantis that showed resistance to ampicillin, chloramphenicol, streptomycin, sulphonamide, tetracycline, kanamycin and trimethoprim/sulfamethoxazole emerged in 2005-06.

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*This outbreak included multiple serovars

^a Multiple serovars, including Salmonella Altona, Cerro, Enteritidis, Indiana, Infantis, Johannesburg, Mbandaka, and Typhimurium, were linked to this outbreak. The case number represents the total number of cases associated with the outbreak and does not specifically indicate the number of people infected by Salmonella Infantis.

Border Rejections and Recalls:

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1. http://www.cdc.gov/salmonella/dog-food-05-12/
2. http://www.cdc.gov/salmonella/live-poultry-04-13/index.html
3. http://lohmann-information.com/content/l_i_45_artikel15.pdf
4. http://www.ncbi.nlm.nih.gov/pubmed/22564450
5. http://www.ncbi.nlm.nih.gov/pubmed/21821397
6. http://analytics.foodtrack.net/cgi-bin/read?rid=MjAxOTAyMjExMzQ0Rk9PRFRSQ0tCVUxMRVRTXzAyMjExOUw0MjY=&style=html&source=email
7. https://www.cdc.gov/salmonella/backyardpoultry-05-24/index.html