Abstract：Objective To investigate the serotype distribution and the molecular epidemiological characteristics of Salmonella among catering service employees in Yangzhou City. Methods We collected the anal swab samples of catering service employees from 14 catering enterprises under special monitoring in Yangzhou in 2014. After bacteria proliferation, the suspected colonies were picked out for serological identification and PFGE typing. Results Fourteen Salmonella strains isolated from 1,035 anal swab samples of catering service employees mainly belonged to group D and group E, and the Salmonella carrying rate was 1.35%. 7 PFGE types (P1-P7) were observed from 11 Salmonella strains, and the similarity coefficients ranged from 60.9% to 100.0%. Two strains isolated respectively from a college canteen (P5, N=4) and a hotel (P3, N=2) presented a same PFGE type. Conclusions The serotypes of Salmonella isolated from catering service employees in Yangzhou City are mainly group D and group E. The results of PFGE indicate that no common sources of infection are found in Salmonellae isolated from different monitoring sites, but 2 food processing establishments have particular sources of infection, with potential food safety risks.
2016, Vol. 23 
