سروتایپینگ سالمونلاهای جداشده از مراجعه کنندگان به مراکز درمانی شهر همدان در سالهای 1376ـ1372

     In   order  to  survey  epidemiological  characteristics   of   Salmonellosis  in         Hamadan city , a cross - sectional study was made on patients with  positive        cultures of Salmonella species.      A   total   of   318   Salmonella   species  was  collected from eight medical    centers    from Feb 1993 to May 1997. Different serotypes  were  identified  in    microbiology    laboratory of the School of   Medicine.  The   data   including    age, and sex, etc.    were gathered through a  questionnaire  and   analyzed    using ‘’Epi6’’ system.      Of 318 Salmonella species isolated , the most  frequent  serotypes   were  S.         typhi 44.4% followed  by   S. typhimurium   18.6% . The   frequency   of   other         serotypes were as follows :      S. para B 8.4%, S. para C 6.9% , S. enteritidis 4.8% , S. para A 4.4% , S. species    4.1% , S. choleraesuis 2.8%, S. agona 2.2% , S. arizona 1.9% , S. infantis 0.6% , S.    havana , S. lexington and S. virchow each 0.3%. The highest  rate of isolation    was from   blood   culture   (54.7%)   and  the  lowest  rate was from CSF and    pleural fluid culture (0.3%).      The results showed that the predominant serotypes were S. typhi   followed         by S. typhimurium in Hamadan city. There was significant relation   between         sex and age groups of the typhoidal and non - typhoidal patients.