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), Maine (1), Michigan (1) Minnesota (3), North Carolina (2), New Jersey (1), Ohio (1), Oregon (4), Pennsylvania (1), Rhode Island (1), Texas (8), Virginia (1), Washington (2), and Wisconsin (1). The infants range in age from 16 to 264 days. Illness onset dates range from December 24, 2023 to December 1, 2025. All of the infants were treated with BabyBIG®, the FDA-approved treatment for this infection developed by the California Department of Health. The FDA … [Read more...]
Outbreak #6 of 2025: Deadly Lyons and Sysco Frozen Shakes
The top 10 outbreaks of 2025 continues with number six: the deadly Lyons and Sysco frozen shakes Listeria monocytogenes outbreak that sickened 42 people in 21 states and killed 14. Forty one people were hospitalized. The outbreak was declared over on May 16, 2025. The case count by state was: Alabama (1), California (4), Colorado (1), Connecticut (2), Florida (2), Illinois (5), Indiana (3), Maryland (1), Michigan (2), Minnesota (1), Missouri (1), Nevada (1), New York (3), North Carolina (2), Ohio (1), Oklahoma (1), Pennsylvania (1), Tennessee (2), Texas (6), Washington (1), and West Virginia (1). The patient age range was from 43 to 101 years. Illness onset dates ranged from August 17, 2018 to March 13, 2025. A total of 14 deaths were reported. Those patients lived in ten states: … [Read more...]
Top 10 2025 Outbreaks: Number 7 Deadly FreshRealm Listeria
Our top 10 list of 2025 outbreaks continues with number 7: the deadly FreshRealm Listeria monocytogenes outbreak that has sickened at least 27 people in 18 states and killed 6. This outbreak investigation has not been updated since October 30, 2025. The case count by state is: California (3), Hawaii (2), Florida (1), Illinois (1), Indiana (1), Louisiana (2), Michigan (2), Minnesota (1), Missouri (1), North Carolina (1), Nevada (1), Ohio (1), Oregon (3), South Carolina (1), Texas (3), Utah (1), and Washington (1). There are 17 states listed, not 18 as the CDC is claiming. We don’t know what is causing this discrepancy. The people who died lived in Hawaii, Oregon, Illinois, Michigan, Texas, and Utah. One pregnancy-associated illness caused a fetal loss. Many products have been … [Read more...]
ByHeart Infant Botulism Outbreak Has Sickened 51 Babies
The ByHeart infant botulism outbreak has now sickened 51 babies in 19 states, according to the CDC. All of the patients have been hospitalized. That is an increase of 12 new cases, 12 new hospitalizations, and one new state since the last update was issued a week ago. The new state is Ohio. The case count by state is: Arizona (5), California (12), Idaho (2), Illinois (2), Kentucky (1), Massachusetts (2), Maine (1), Michigan (1) Minnesota (3), North Carolina (2), New Jersey (1), Ohio (1), Oregon (4), Pennsylvania (1), Rhode Island (1), Texas (8), Virginia (1), Washington (2), and Wisconsin (1). The infants range in age from 16 to 264 days. Illness onset dates range from December 24, 2023 to December 1, 2025. All of the infants were hospitalized and treated with BabyBIG®, the … [Read more...]
ByHeart Formula Botulism Outbreak Case Count Up to 37 Infants
The ByHeart formula botulism outbreak case count has now sickened 37 infants in 17 states, according to the Centers for Disease Control and Prevention (CDC). That's an increase of six new patients, six new hospitalizations, and two new states since the last update was issued on November 20, 2025. The new states are Massachusetts and Wisconsin. The case count by state is: Arizona (3), California (5), Idaho (1), Illinois (2), Kentucky (1), Massachusetts (1), Maine (1), Michigan (1) Minnesota (2), North Carolina (2), New Jersey (1), Oregon (3), Pennsylvania (1), Rhode Island (1), Texas (8), Washington (2), and Wisconsin (1). For 35 infants whose age was made available to public health officials, they range in age from 16 to 264 days. Illness onset dates range from August 9 to November … [Read more...]
Byheart Infant Formula Botulism Outbreak Has Sickened 31
The Byheart Infant Formula botulism outbreak has sickened 31 babies as of November 19, 2025, according to the CDC, an increase of eight more patients since the last update was issued on November 14, 2025. All eight infants have been hospitalized, and two more states are added to the case count. The new states are Idaho and Maine. The case count by state is: Arizona (3), California (4), Idaho (1), Illinois (2), Kentucky (1), Maine (1), Michigan (1) Minnesota (2), North Carolina (2), New Jersey (1), Oregon (3), Pennsylvania (1), Rhode Island (1), Texas (6), and Washington (2). For 23 infants whose age was made available to public health officials, they range in age from 16 to 200 days. Illness onset dates range from August 9 to November 13, 2025 for 27 of these infants. All of the … [Read more...]
ByHeart Infant Botulism Outbreak Case Count Surges to 23
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 (1), Michigan (1) Minnesota (2), North Carolina (2), New Jersey (1), Oregon (2), Pennsylvania (1), Rhode Island (1), Texas (3), and Washington (1). For 22 infants whose age is available, they range in age from 16 to 200 days. Illness onset dates range from August 9 to November 11, 2025. All of the infants were hospitalized and treated with BabyBIG®, the FDA-approved treatment for this infection developed by the California Department of Health. Infant … [Read more...]
ByHeart Infant Formula Botulism Outbreak Sickens 15 Babies
The ByHeart Infant Formula botulism outbreak has now sickened 15 babies in 12 states, according to the Centers for Disease Control and Prevention (CDC). That is an increase of two more patients in two more states since the last update was issued three days ago. The new states are Kentucky and New Jersey. The case count by state is: Arizona (1), California (2), Illinois (2), Kentucky (1), Minnesota (1), North Carolina (1), New Jersey (1), Oregon (1), Pennsylvania (1), Rhode Island (1), Texas (2), and Washington (1). For 14 infants whose age is available, they range in age from 16 to 157 days. Illness onset dates range from August 9 to November 10, 2025. All of the infants were hospitalized and treated with BabyBIG®. No deaths have been reported. According to information from the … [Read more...]
Possible ByHeart Infant Formula Botulism Outbreak Sickens 13
A possible ByHeart infant formula botulism outbreak has sickened 13 babies, according to the Center for Disease Control and Prevention (CDC). All 13 infants have been hospitalized. Two lots of the company's infant formula have been recalled. The formula was sold online and nationwide at the retail level. The case count of babies with suspected or confirmed infant botulism by state is: Arizona (1), California (2), Illinois (2), Minnesota (1), New Jersey (1), Oregon (1), Pennsylvania (1), Rhode Island (1), Texas (2), and Washington (1). Illness onset dates range from mid-August to November 2025. All 13 infants were treated with BabyBIG®. The infants range in age from 15 to 157 days old. Public health officials have been interviewing caregivers about the foods these babies were fed … [Read more...]
FreshRealm Fettuccine Listeria Outbreak Sickens 27 With 6 Dead
The FreshRealm fettuccine Listeria outbreak has now sickened 27 patents and hospitalized 25, and six people are dead. That's an increase of seven more patients, six new hospitalizations, two new deaths, and three new states since the last update was issued on September 26, 2025. The outbreak was announced on June 18, 2025. The case count by state is: California (3), Hawaii (2), Florida (1), Illinois (1), Indiana (1), Louisiana (2), Michigan (2), Minnesota (1), Missouri (1), North Carolina (1), Nevada (1), Ohio (1), Oregon (3), South Carolina (1), Texas (3), Utah (1), and Washington (1). The new states are Hawaii, Washington, and Oregon. There are 17 states listed, not 18 as the CDC is claiming. We don't know what is causing this discrepancy. The people who died lived in Hawaii, … [Read more...]
