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Summer is ending with more than 1,000 people infected with Salmonella because of contamination by backyard poultry flocks. All but one of the 50 states has backyard flock outbreaks.
The federal Centers for Disease Control and Prevention reports an additional 235 patients on the outbreak logs between July 19 and Aug. 30. And 175 of 1,003 Salmonella infections resulted in hospitalization in 49 states.
Two deaths, one from Texas and the other from Ohio, are associated with the backyard flock Salmonella outbreaks this year.
Of 850 ill people with age information available, 192, or 23 percent, are children younger than five.
Epidemiologic and laboratory evidence indicate that contact with backyard poultry, such as chicks and ducklings, from multiple hatcheries, are the likely source of these outbreaks.
In interviews, two out of three ill people reported contact with chicks or ducklings before becoming sick. People reported getting chicks and ducklings from several sources, including agricultural stores, websites, and hatcheries.
Six of the outbreak strains making people sick have been identified in samples collected from backyard poultry environments at people’s homes in California, Minnesota and Ohio and from poultry environments at retail stores in Michigan and Oregon.
Poultry can carry Salmonella germs that can make people sick. Backyard poultry owners should always follow steps to stay healthy around their poultry.
Advice to Backyard Flock Owners
Advice to stores that sell or display poultry
Advice to mail-order hatcheries
Symptoms of Salmonella infection
Investigation details
CDC and public health officials in several states are investigating multiple multistate outbreaks of Salmonella infections with serotypes Agona, Alachua, Altona, Anatum, Braenderup, Enteritidis, Infantis, Manhattan, Montevideo, Muenchen, Newport, and Oranienburg linked to contact with backyard poultry. Salmonella serotype Altona was added to the investigation since the last update.
As of August 23, 2019, a total of 1003 people infected with the outbreak strains of Salmonellahave been reported from 49 states. A list of the states and the number of cases in each is on the map of reported cases page.
Illnesses started on dates from January 1, 2019, to August 9, 2019. Ill people range in age from less than 1 year to 99 years, with a median age of 32 years. Of 850 ill people with age information available, 192 (23%) are children younger than 5 years. Fifty-seven percent are female. Of 605 people with information available, 175 (29%) have been hospitalized. Two deaths have been reported.
Whole genome sequence (WGS) analysis of 149 bacterial isolates from ill people predicted antibiotic resistance or decreased susceptibility to one or more of the following drugs: amoxicillin-clavulanic acid, ampicillin, azithromycin, cefoxitin, ceftriaxone, chloramphenicol, ciprofloxacin, fosfomycin, gentamicin, kanamycin, nalidixic acid, streptomycin, sulfisoxazole, tetracycline, and trimethoprim-sulfamethoxazole. Testing of eight isolates by CDC’s National Antimicrobial Resistance Monitoring System (NARMS) laboratory using standard antibiotic susceptibility testing confirmed these results. If antibiotics are needed, this resistance profile may affect the choice of antibiotic.
WGS analysis of an additional 512 isolates from ill people did not show evidence of antibiotic resistance. Testing of 30 of these isolates by CDC’s NARMS laboratory using standard antibiotic susceptibility testing confirmed these results.
Six of the outbreak strains making people sick have been identified in samples collected from backyard poultry environments at people’s homes in California, Minnesota and Ohio, and from poultry environments at retail stores in Michigan and Oregon.
In interviews, ill people answered questions about animal contact in the week before they became ill. Of 511 people interviewed, 343 (67%) reported contact with backyard poultry before becoming ill. Ill people reported buying poultry from various sources, including agricultural stores, websites, and hatcheries.
Backyard poultry from multiple hatcheries are the likely source of these outbreaks. Regardless of wher poultry are purchased, they can carry Salmonella germs that can make people sick. Backyard poultry owners should always follow steps to stay healthy around their poultry.
This investigation is ongoing, and CDC will provide updates when more information becomes available.
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