Pediatric Yersinia Enterocolitica Clinical Presentation
- Author: Swetha G Pinninti, MD; Chief Editor: Russell W Steele, MD more...
History
Yersinia enterocolitica infection may be asymptomatic; however, several syndromes are associated with this infection in children.
- Enterocolitis
- Enterocolitis, the most common presentation, occurs primarily in young children, with a mean age of 24 months.
- The incubation period is 4-6 days, typically with a range of 1-14 days.
- Prodromal symptoms of listlessness, anorexia, and headache may be present. Such symptoms are followed by watery, mucoid diarrhea (78-96%); fever (43-47%); colicky abdominal pain (22-84%); bloody stools (< 10%); and WBCs in the stool (25%).
- Duration of diarrhea is generally 1 day to 3 weeks.
- Concomitant bacteremia may occur in 20-30% of infants younger than 3 months.
- Most cases are self-limited.
- Complications include appendicitis,[9] diffuse ulceration and inflammation of the small intestine and colon, peritonitis,[10, 11] meningitis, intussusception,[12] and cholangitis.
- Pseudoappendicitis syndrome
- Characteristics include fever, abdominal pain, tenderness in the right lower quadrant, and leukocytosis.
- This condition is predominantly reported in patients with Y pseudotuberculosis infection.
- Infection causes mesenteric lymphadenitis with terminal ileitis.
- Pseudoappendicitis syndrome is more common in older children and young adults.[13]
- Bacteremia: Bacteremia is seen most frequently in very young infants and patients with iron-overload syndromes receiving frequent transfusion for sickle cell anemia,[14] thalassemia,[3] and hemochromatosis[4] , as well as those receiving oral iron supplementation and those who experienced an unintentional iron overload. Both iron overload and treatment with desferrioxamine are predisposing factors.[14] Treatment with desferrioxamine increases bioavailability of iron to Y enterocolitica.
- Postinfectious, nonsuppurative sequelae: Such sequelae, which are uncommon, include reactive polyarthritis[15] , erythema nodosum, and proliferative glomerulonephritis. These sequelae are most often seen in individuals with human leukocyte antigen (HLA)-B27.[16] Long-term prognosis for this form of arthritis is good. Chronic inflammatory bowel disease has also been associated with Y enterocolitica infections.[17]
Physical
- Clinically, suspect Y enterocolitica infection in children with watery, bloody, mucoid diarrhea; a positive stain for WBCs; and exposure to uncooked meat products, particularly pork.
- Physical findings mimicking appendicitis may be noted.
- Less commonly, pharyngitis, cellulitis, meningitis, conjunctivitis, pneumonia, arthritis, and erythema nodosum are observed.
Causes
- Animal reservoirs
- Swine (principle reservoir)
- Cattle
- Dogs
- Rodents
- Sheep
- Cats
- Transmission
- Transmission is primarily via ingestion of contaminated foods, especially people who handle/eat pork. Chitterlings have been documented as a source of infection.[18] Guidelines for the diagnosis and management of foodborne illnesses have been established.[19]
- Pasteurized milk and dairy products can also cause outbreaks because Yersinia can proliferate at refrigerated temperatures.[20, 21]
- Fecal-oral transmission among humans has not been proven.[22]
- Transmission via blood products has occurred.[23]
- Infection can be transmitted from mother to newborn infant.
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