目的 回顾分析2017—2018年汕头中心医院50例腹泻儿童鼠伤寒沙门菌的标本信息及药敏结果, 得出汕头地区这两年鼠伤寒沙门菌感染特性及指导临床合理用药。方法 从腹泻儿童粪便标本中分离沙门氏菌, 采用纸片扩散法检测其对抗菌药物的敏感性, 采用血清学凝集试验沙门氏菌血清型, 记录鉴定为鼠伤寒沙门菌的标本数据进行分析。结果 50例腹泻儿童鼠伤寒沙门氏菌中,易感时间多为夏秋季节;0～1岁为易感人群;感染后多出现发热、腹泻症状,可出现血便症状,较少出现呕吐;鼠伤寒沙门菌对亚胺培南、替加环素、厄他培南有100%的敏感率,对呱啦西林/他唑巴坦、头孢呱酮/舒巴坦有96%和92.68%的敏感率,队阿莫西林/克拉维酸有80.48%的敏感率,对阿米卡星、头孢呋辛酯、头孢呋辛、头孢西丁都为100%耐药,对其他抗生素有不同程度的敏感性及耐药性。结论 在夏秋季节,0～1岁儿童应加强对鼠伤寒沙门菌感染的预防,若出现发热、腹泻症状需及时就医,医生需向鼠伤寒沙门菌的方向考虑治疗,鼠伤寒沙门菌对多抗生素产生耐药性,临床上需根据药敏结果合理使用抗生素。

Objective To retrospectively analyze information and drug susceptibility of 50 cases of Salmonella typhimurium isolated from children with diarrhea in Shantou Central Hospital from 2017 to 2018, and to obtain the characteristics of Salmonella typhimurium infection in Shantou area in the past two years and to guide rational drug use in clinic. Methods Salmonella was isolated from fecal specimens of children with diarrhea. The susceptibility of Salmonella to antimicrobial agents was detected by disk diffusion method. Serological agglutination test was used to determine the serotype of salmonella. Sample data identified as Salmonella typhimurium were recorded and analyzed. Results Among the 50 children with diarrhea, the susceptibility time of Salmonella typhimurium was summer and autumn; the age of 0～1 was susceptible population; fever and diarrhea were common after infection, and hematochezia and vomiting were rare; Salmonella typhimurium had 100% susceptibility to imipenem, tegacycline and ertapenem, 96% and 92.68% to guacillin/tazobactam, cefotaxone/sulbactam. The sensitivity rate of amoxicillin/clavulanic acid was 80.48%. It was 100% resistant to amikacin, cefuroxime axetil, cefuroxime and cefoxitin. It had different sensitivity and resistance to other antibiotics. Conclusion In summer and autumn, children aged 0～1 should strengthen prevention of Salmonella typhimurium infection. If symptoms of fever and diarrhea occur, doctors should consider the direction of Salmonella typhimurium treatment. Salmonella typhimurium is resistant to multi-antibiotics, and rational use of antibiotics in clinic should be based on the results of drug sensitivity.