| Yersinia pseudotuberculosis is a Gram-negative bacterium which primarily causes disease in animals; humans occasionally get infected zoonotically, most often through the food-borne route. In animals, Y. pseudotuberculosis can cause tuberculosis-like symptoms, including localized tissue necrosis and granulomas in the spleen, liver, and lymph node. In humans, symptoms are similar to those of infection with Yersinia enterocolitica (fever and right-sided abdominal pain), except that the diarrheal component is often absent, which sometimes makes the resulting condition difficult to diagnose. Y. pseudotuberculosis infections can mimic appendicitis, especially in children and younger adults, and, in rare cases the disease may cause skin complaints (erythema nodosum), joint stiffness and pain (reactive arthritis), or spread of bacteria to the blood (bacteremia) (Wiki: Y. pseudotuberuclosis). |
