Listeriosis is an often serious infection caused by eating food contaminated with the bacterium Listeria monocytogenes. The disease affects primarily pregnant women, newborns, and adults with weakened immune systems. It can occur sporadically, or in foodborne outbreaks of septicemia (blood poisoning), gastrointestinal (GI) illness, or a combination of both.
In four reported outbreaks of GI listeriosis, the syptom profile was 72% fever, 68% diarrhea, 56 myalgia (muscle ache), 55% headache, 55% abdominal (stomach or intestinal) cramping, 41% nausea and 35% vomiting. A point-source outbreak of GI listeriosis has not occurred in Oregon yet.
Health-care providers and clinical laboratories are required to report cases and suspect cases
of listeriosis to local health departments within one working day
See our disease reporting page
for information on how to report and for telephone numbers of local health departments. For county health departments
Listeriosis search results