Pathogenic surveillance and analysis on infectious diarrhea in Dalian

Objective To understand the epidemic characteristics and types of infectious diarrhea pathogens in Dalian,and provide references for the prevention and control as well as clinical treatment of infectious diarrhea.Methods The pathogen strains were isolated by routine stool culture and the serological typing was performed.The biochemical identification of the isolates and drug susceptibility test of Shigella were carried out by Automated Microbiology Analyzer MicroScan WalkAway-40.The data were analyzed by WHONET 5.4 software.Results 109 intestinal pathogenic bacteria were detected out of 872 samples(12.5%),in which Shigella accounted for the largest proportion,followed by Salmonella and Parahaemolyticus.The Shigella strains were sensitive to Carbapenems,Fluoroquinolones,Cephalosporins,while resistant to Penicillins and Sulfonamides.Conclusion Shigella is the primary pathogen causing infectious diarrhea in Dalian,followed by Salmonella and Parahaemolyticus.The prevention and control of diarrheal disease in Dalian should be based on the surveillance results,and antibiotics ought to be used according to the results of drug resistance test so as to reduce the emergence of Shigella resistant strains.