[Infections in man induced by Yersinia enterocolitica serovar 09 and 04 (author's transl)]

Area of Science:

• Microbiology
• Clinical Medicine
• Infectious Diseases

Background:

• Yersinia enterocolitica is a significant bacterial pathogen causing human infections.
• Gastrointestinal and extra-intestinal manifestations of Yersinia enterocolitica infections can mimic other conditions.

Observation:

• Yersinia enterocolitica serovar 09 was isolated from stool samples of two patients presenting with severe enteritis and pseudo-appendicitis.
• Both patients demonstrated elevated serum-agglutinin titers specific to the isolated Yersinia enterocolitica strains.
• Positive Widal reactions against brucella-antigens were noted in these patients.
• Yersinia enterocolitica serovar 04 was concurrently isolated from a patient's suppurating wound.

Findings:

• This study highlights the clinical relevance of Yersinia enterocolitica serovars 09 and 04 in distinct human infections.
• The serological response, indicated by high agglutinin titers and positive Widal reactions, supports the etiological role of Yersinia enterocolitica serovar 09.
• Co-occurrence of Yersinia enterocolitica serovar 04 in wound infections expands the spectrum of its clinical presentations.

Implications:

• Accurate identification of Yersinia enterocolitica serovars is crucial for appropriate patient management and treatment.
• Clinicians should consider Yersinia enterocolitica in the differential diagnosis of enteritis, pseudo-appendicitis, and suppurative wound infections.
• Further research into the pathogenicity and serological diagnosis of Yersinia enterocolitica is warranted.