YERSINIA INFECTIONS : CLINICAL ASPECTS
Both Y.enterocolitica
and Y.
pseudotuberculosis cause acute mesenteric lymphadenitis, a syndrome involving
fever and abdominal pain that often mimics acute appendicitis.Y. enterocolitica also produces awidervarietyof
manifestations. Themost common of these is an enterocolitis, which usually
occurs in children. It is characterized by fever, di- arrhea, and abdominal
pain. It also causes enteric fever, terminal ileitis, and a polyar- thritic syndrome
associated with its
diarrheal manifestations. Few
laboratories in the United States routinely screen stools for
Yersinia, because yield has been low
and good selective media are not available.
The role of antimicrobial therapy in the enteric Yersinia infections is uncertain,
be-cause they are usually self-limiting. Y.
pseudotuberculosis is susceptible to ampicillin, cephalosporins,
aminoglycosides, tetracyclines, and chloramphenicol, butY. enterocoliticais
usually resistant to
penicillins and cephalosporins through
the production of lactamases.
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