2020 Salmonella Outbreak Linked to Backyard Poultry – Timeline
Final Update
Posted December 17, 2020 at 4:50 PM ET
This outbreak investigation is over. Although the investigation is over, people can still get a Salmonella infection from chickens and ducks in backyard flocks. Stay healthy around your backyard flock by washing your hands, keeping your birds outdoors, and supervising young children around your flock.
People infected with one of the outbreak strains of Salmonella, by date of illness onset*
*n=1,722 for whom information was reported as of December 17, 2020. Some illness onset dates have been estimated from other reported information.
Previous Timelines
People infected with one of the outbreak strains of Salmonella, by date of illness onset*
*n=1,659 for whom information was reported as of November 18, 2020. Some illness onset dates have been estimated from other reported information.
Illnesses that started after October 31, 2020 might not yet be reported due to the time it takes between when a person becomes ill and when the illness is reported. This takes an average of 2 to 4 weeks.
People infected with one of the outbreak strains of Salmonella, by date of illness onset*
*n=1,346 for whom information was reported as of September 22, 2020. Some illness onset dates have been estimated from other reported information.
Illnesses might not yet be reported due to the time it takes between when a person becomes ill and when the illness is reported. This takes an average of 2 to 4 weeks.
People infected with one of the outbreak strains of Salmonella, by date of illness onset*
*n=938 for whom information was reported as of July 28, 2020. Some illness onset dates have been estimated from other reported information.
Recent illnesses might not yet be reported due to the time it takes between when a person becomes ill and when the illness is reported. This takes an average of 2 to 4 weeks.
People infected with one of the outbreak strains of Salmonella, by date of illness onset*
*n=465 for whom information was reported as of June 23, 2020. Some illness onset dates have been estimated from other reported information.
Illnesses might not yet be reported due to the time it takes between when a person becomes ill and when the illness is reported. This takes an average of 2 to 4 weeks.
People infected with the outbreak strain of Salmonella Hadar, by date of illness onset*
*n=97 for whom information was reported as of May 15, 2020. Some illness onset dates have been estimated from other reported information.
Illnesses might not yet be reported due to the time it takes between when a person becomes ill and when the illness is reported. This takes an average of 2 to 4 weeks.
