Abstract
In this article, we report on the basic analysis of extraintestinal infection of Aeromonas bacteria. Out of 171 cases, there were 21 fatal cases, 5 fulminant cases, and 4 necrosis cases (among these, one case was necrotizing soft tissue infection). The average patient age was 73.3 years, and 86% were older than 60 years. Regarding underlying conditions, in addition to illnesses related to the hepato-biliary-pancreatic system, illnesses that led to decreased immunity, such as diabetes and malignant tumors, were observed at a high rate. This trend was particularly noted in the fatal cases. The clinical diagnoses varied, including hepato-biliary-pancreatic system illnesses, blood poisoning, aspirated pneumonia, abscess infection, and necrotizing soft tissue infection. According to an antimicrobial susceptibility test, the bacteria showed good sensitivity to TAZ/PIPC, CTX, IPM/CS, GM, LVFX, and ST. On the other hand, high resistance to SBT/ABPC and CEZ was also observed. A few strains (4.3%) did not show sensitivity to IPM/CS. Although no trend of multidrug resistance was observed in these bacteria, the expression of some type of resistance mechanism is considered possible. From now, focusing on the antimicrobial resistance of Aeromonas bacteria is considered important.
