UPDATE July 13, 2018: Since the last update on June 14, 2018, 27 ill people have been added to this investigation.

As of July 12, 2018, 100 people infected with the outbreak strain ofSalmonellaMbandaka have been reported from 33 states. A list of the states and the number of cases in each can be found on theCase Count Map page.

Illnesses started on dates fromMarch 3, 2018, to July 2, 2018. Ill people range in age from less than one year to 95, with a median age of 57. Of ill people, 68% are female. Out of 77 people with information available, 30 (39%) have been hospitalized. No deaths have been reported.

Illnesses that occurred after June 19, 2018, might not yet be reported due to the time it takes between when a person becomes ill and when their illness is reported. This takes an average of 2 to 4 weeks. Please see theTimeline for Reporting Cases ofSalmonellaInfectionfor more details.

Investigation Update

State and local health officials continue to interview ill people and askquestions about the foods they ate and other exposuresin the week before they became ill. Fifty-five (85%) of 65 people interviewed reported eating cold cereal. In interviews, 43 people specifically reported eating Kellogg’s Honey Smacks cereal. Ill people in this outbreak reported this cereal more often than any other cereals or food items.

Health officials in several states collected Kellogg’s Honey Smacks cereal from retail locations and ill people’s homes for testing. Laboratory testing identified the outbreak strain ofSalmonellaMbandaka in a sample of unopened Kellogg’s Honey Smacks cereal collected from a retail location in California. Laboratory testing also identified the outbreak strain in samples of leftover Kellogg’s Honey Smacks cereal collected from the homes of ill people in Montana, New York, and Utah.

The Kellogg Company recalled all Honey Smacks products that were on the market within the cereal’s one-year shelf-life. However, Honey Smacks products with earlier dates could also potentially be contaminated. Do not eat Kellogg’s Honey Smacks cereal of any size package or with any “best if used by” date.

CDC will provide updates when more information is available.


June 14, 2018

CDC, public health and regulatory officials in several states, and theU.S. Food and Drug Administrationare investigating a multistate outbreak ofSalmonellaMbandaka infections.

Public health investigators are using thePulseNetsystem to identify illnesses that may be part of this outbreak. PulseNet is the national subtyping network of public health and food regulatory agency laboratories coordinated by CDC. DNA fingerprinting is performed onSalmonellabacteria isolated from ill people by using techniques calledpulsed-field gel electrophoresis(PFGE) andwhole genome sequencing(WGS). CDC PulseNet manages a national database of these DNA fingerprints to identify possible outbreaks. WGS gives a more detailed DNA fingerprint than PFGE.

As of June 14, 2018, 73 people infected with the outbreak strain ofSalmonellaMbandaka have been reported from 31 states. A list of the states and the number of cases in each can be found on theCase Count Map page.

Illnesses started on dates fromMarch 3, 2018, to May 28, 2018. Ill people range in age from less than one year to 87, with a median age of 58. Sixty-five percent are female. Out of 55 people with information available, 24 (44%) have been hospitalized. No deaths have been reported.

Illnesses that occurred after May 22, 2018, 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. Please see theTimeline for Reporting Cases ofSalmonellaInfectionfor more details.

Investigation of the Outbreak

Epidemiologic evidenceindicates that Kellogg’s Honey Smacks cereal is a likely source of this multistate outbreak.

In interviews, ill people answeredquestions about the foods they ate and other exposuresin the week before they became ill. Thirty (77%) of 39 people interviewed reported eating cold cereal. In interviews, 14 people specifically reported eating Kellogg’s Honey Smacks cereal. Ill people in this outbreak reported this cereal more often than any other cereals or food items.

On June 14, 2018, the Kellogg Companyrecalledpackages of Kellogg’s Honey Smacks cereal.

CDC will provide updates when more information is available.