Abstract：Objective To investigate the contamination status of diarrheagenic Vibrio in the diarrhea populationand marine (aquatic) productsin Beihai City so as to provide evidence for formulating prevention and control strategies in Beihai City. Methods According to the requirements of the National Plan for Cholera Surveillance, 2012 (Guangxi Implementation Plan) and the Beihai Plan for Cholera Surveillance (Beihai Health and Prevention 2012, No.76), diarrheagenic Vibrio in the diarrhea population and marine (aquatic) products was monitored from May to October in 2013-2015. And the prevalence status of diarrheagenic Vibrio in Beihai City was analyzed. Results A total of 1,126 diarrhea stool specimens were collected during 2012-2015. Vibrio parahemolyticus was detected in 6 specimens, Vibrio fluvialis in 1 specimen, and Aeromonas in 9 ones. The total positive rate of Vibrio was 1.42%, but no Vibrio cholera was detected in the monitored specimens. The positive rates of Vibrio in the diarrhea population in 2013, 2014 and 2015 were 1.79%, 2.14% and 0.28% respectively, without statistically significant differences (χ2=5.108, P=0.078). The positive rates of Vibrio in the marine (aquatic) products in 2013, 2014 and 2015 were 27.85%, 44.44% and 75.42% respectively, showing no statistically significant differences (χ2=46.879, P=0.001). The positive rate of Vibrio parahemolyticus in 2015 was higher than those in 2014 and 2013 (both P<0.05), showing an increasing tendency year by year (χ2tendncy=45.305, P=0.001). Conclusions Although no Vibrio cholera is detected in the diarrhea population and marine (aquatic) products in Beihai City during 2013-2015, the detection rate of Vibrio parahemolyticus in the marine (aquatic) products shows an increasing tendency year by year. Continuously intensifying the monitoring and timely detecting the indicative strains in specimens are significantly important to prevent and control the occurrence and prevalence of cholera.
2017, Vol. 24 
