Arizona outbreak information for Campylobacter, E. coli, Listeria, Salmonella and Shigella.
Maricopa County Fair is excluding a petting zoo among its attractions this year after a 2025 E. coli outbreak that sickened at least 18 people, including 13 children, was associated with the zoo, according to Arizona Central. Pony rides are also being excluded. Executive director Karen Searle told The Arizona Republic in a statement, “Out … Read more
The ByHeart formula infant botulism outbreak has ended with 48 sick, according to the CDC. This outbreak case count has been confusing from the beginning. In the last update issued on December 11, 2025, there were allegedly 51 babies sick. And the FDA update lists 28 sick. But the FDA numbers include 28 cases of … Read more
The ByHeart botulism outbreak strain has been found in a sample of organic whole milk powder used to make the infant formula, according to the FDA. The outbreak strain was also found in a closed product sample of the formula obtained by the FDA. The outbreak strain is Type A. The case count has not … Read more
According to information from the Maricopa County Department of Public Health, the Arizona State Fair is the source of 13 E. coli illnesses in children. Those children all had contact with petting zoos or other animal exhibits before they got sick. The state fair was held from September 19 to October 26, 2025. Shiga toxin-producing … Read more
After the Arizona fair E. coli outbreak, that sickened an unknown number of children, a bill has been introduced to the Arizona Senate requiring handwashing stations at petting zoos and animal exhibits. SB 1082 was introduced by Senator Kavanaugh. The state fair was held from September 19 to October 26, 2025. The bill would mandate … Read more
The deadly August Egg Company Salmonella outbreak was the number one outbreak of 2025 with at least 134 people sick in 10 states, 38 hospitalized, and one death. The outbreak was a announced on June 6, 2025 and was declared over on July 10, 2025. The case count by state is: Arizona (8), California (109), … Read more
The number 5 outbreak of 2025 is the Byheart infant formula botulism outbreak that is still ongoing. There are at least 51 infants in 19 states who have been sickened in this outbreak; all have been hospitalized. The case count by state is: Arizona (5), California (12), Idaho (2), Illinois (2), Kentucky (1), Massachusetts (2), … Read more
Is a petting zoo the cause of the Arizona State Fair E. coli outbreak? It may be. Food Poisoning Bulletin heard from JP Martin, Media Director of the Arizona Department of Health Services. He said, “On Nov 13, ADHS issued a Healthcare Advisory related to a two-fold increase of E. coli O157:H7, sometimes called STEC … Read more
A possible E. coli outbreak at the Arizona State Fair has sickened children, according to news reports. The fair, held in Phoenix, in Maricopa County, was open from September 19 to October 26, 2025. Some parents of the sick kids said they visited the petting zoo. A nonprofit group, Parker’s Promise, reported on illnesses on … Read more
The ByHeart infant botulism outbreak case count has surged to 23 babies sick, according to the CDC, an increase of eight more illnesses since the last update was issued three days ago. One more state, Michigan, has been added to the investigation. The case count by state is: Arizona (3), California (3), Illinois (2), Kentucky … Read more