Multistate Outbreak of Human Salmonella Typhimurium Infections Linked to Pet Hedgehogs – United States, 2011–2013 |
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| Authors: | T C Anderson N Marsden‐Haug J F Morris W Culpepper N Bessette J K Adams S Bidol S Meyer J Schmitz M M Erdman T M Gomez C Barton Behravesh |
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| Institution: | 1. Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA;2. Communicable Disease Epidemiology, Washington State Department of Health, Shoreline, WA, USA;3. Association of Public Health Laboratories, Silver Spring, MD, USA;4. Bureau of Epidemiology and Population Health, Michigan Department of Health and Human Services (Michigan Department of Community Health prior to May 2015), Lansing, MI, USA;5. Infectious Disease Epidemiology, Prevention, and Control Division, Minnesota Department of Health, St. Paul, MN, USA;6. Animal Care, Animal and Plant Health Inspection Service, United States Department of Agriculture, Riverdale, MD, USA;7. National Veterinary Services Laboratories, Veterinary Services, Animal and Plant Health Inspection Service, United States Department of Agriculture, Ames, IA, USA;8. Veterinary Services, Animal and Plant Health Inspection Service, United States Department of Agriculture, Atlanta, GA, USA |
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| Abstract: | Zoonotic Salmonella infections cause approximately 130 000 illnesses annually in the United States. Of 72.9 million US households owning at least one pet, five million own small mammals; 3000 hedgehogs were documented by USDA in USDA‐licensed breeding facilities and pet stores in 2012. State health department collaborators and PulseNet, the national bacterial subtyping network, identified human infections of a Salmonella Typhimurium outbreak strain, which were investigated by CDC, USDA‐APHIS and state public and animal health officials. A case was defined as an illness in a person infected with the outbreak strain identified between 1 December 2011 and 3 June 2013. Investigators collected information on patient exposures, cultured animal and environmental specimens for Salmonella, and conducted traceback investigations of USDA‐licensed hedgehog facilities. There were 26 cases in 12 states. Illness onset dates ranged from 26 December 2011 to 8 April 2013. The median patient age was 15 years (range = <1–91 years); 58% were female. Among 23 persons with available information, 8 (35%) were hospitalized and one outbreak strain‐associated death was reported. Of 25 patients with available information, 20 (80%) reported pet hedgehog contact in the week before illness onset. The outbreak strain was isolated from animal and environmental samples collected from three ill persons’ homes in three states. Hedgehogs were purchased in geographically distant states from USDA‐licensed breeders (10/17, 59%); a USDA‐licensed pet store (1/17, 6%); unlicensed or unknown status breeders (3/17, 18%); and private individuals (3/17, 18%). Traceback investigations of USDA‐licensed facilities did not reveal a single source of infection. Public and animal health collaboration linked pet hedgehog contact to human infections of Salmonella Typhimurium, highlighting the importance of a One Health investigative approach to zoonotic salmonellosis outbreaks. More efforts are needed to increase awareness among multiple stakeholders on the risk of illness associated with pet hedgehogs. |
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| Keywords: | Hedgehogs outbreaks pets salmonellosis zoonoses |
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