Prevalence and antimicrobial susceptibility pattern of Salmonella enterica serovar Typhi and Salmonella enterica serovar Paratyphi among febrile patients at Karamara Hospital, Jigjiga, eastern Ethiopia

The aim of this study was to determine the prevalence and antimicrobial susceptibility pattern of Salmonella enterica serovar Typhi and Salmonella enterica serovar Paratyphi among febrile patients at Karamara Hospital, Jigjiga, eastern Ethiopia. A cross-sectional study was conducted among 203 febrile patients presumptive of enteric fever (Salmonella enterica serovar Typhi and Salmonella enterica serovar Paratyphi) at Karamara Hospital from 15 February to 20 March 2016. Venous blood was collected, cultured, and biochemical tests were performed. Antimicrobial susceptibility testing was performed for each isolate using modified Kirby–Bauer disk diffusion technique. The overall prevalence of enteric fever (Salmonella enterica serovar Typhi and Salmonella enterica serovar Paratyphi) was 11%. The prevalence of Salmonella enterica serovar Typhi (7%) was higher than Salmonella enterica serovar Paratyphi (4%). The odds of having enteric fever were higher among the study participants aged 31–45 years and with previous history of enteric fever. Most of the Salmonella enterica serovar Typhi isolates were sensitive to tetracycline (78.6%), gentamycin (64.3%), and ceftriaxone (64%), while most of the isolates of Salmonella enterica serovar Paratyphi were sensitive to tetracycline (100%), gentamycin (100%), and ciprofloxacin (62.5%). All the isolates were resistant to ampicillin and chloramphenicol. Multidrug resistances were found among most of the isolates. A high prevalence of enteric fever and drug resistance to most commonly prescribed antimicrobials were observed in this study. Those of old age with previous history of enteric infection were more affected by enteric fever. Health information should be given about the transmission, prevention of enteric fever, and antimicrobial use. The treatment of enteric fever should be supported by antimicrobial susceptibility tests in the study areas.

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