Salmonella Outbreak: Melon Recall in 8 States

CDC, public health and regulatory officials in several states, and the U.S. Food and Drug Administration are investigating a multistate outbreak of Salmonella Adelaide infections.

Public health investigators are using the PulseNet system 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 on Salmonella bacteria isolated from ill people by using techniques called pulsed-field gel electrophoresis (PFGE) and whole 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 7, 2018, 60 people infected with the outbreak strain of Salmonella Adelaide have been reported from five states. A list of the states and the number of cases in each can be found on the Case Count Map page.

Illnesses started on dates ranging from April 30, 2018, to May 28, 2018. Ill people range in age from less than 1 year to 97, with a median age of 67. Sixty-five percent are female. Out of 47 people with