Recent Antimicrobial Susceptibility Patterns of Salmonella Isolates in A Tertiay Care Hospital Lahore

Objective: To determine the recent antimicrobial susceptibility patterns of salmonella isolates (typhi and paratyphi) in a tertiary care hospital of Lahore. Methods: It is cross sectional retrospective study conducted out in King Edward Medical University(Pathology deptt)/Mayo Hospital Lahore.The study period is six months from May 2019 to October 2019(Peak months of Typhoid fever).During this six months study period, total of 4284 samples for blood culture were received that were inoculated on the macConkey and blood agar plates.The growths obtained were then processed through biochemical profiling and analytical profile index(API).The Kirby Bauer technique was used for antibiotic susceptibility testing and reporting was done on the basis of clinical laboratory standard institute(CLSI). Results: During these six months, total 4284 blood samples were inoculated, out of which 433 growths were obtained. There were 84 strains of salmonella typhi isolated. Sensitivity pattern of different antibiotics showed that Azithromycin was sensitive to 70 (83.3%) isolates, imipenem in 72 (85.7%), ciprofloxacin to 56 (66.7%), gentamycin to 48 (57.1%), ceftriaxone to 45 (53.6%), cefepime to 20 (23.8%), chloramphenicol to 12 (14.3%) while ampicillin was least sensitive i.e. 8 (9.5%) isolates. There were 24 MDR(multidrug resistant) and 12 were XDR(extensive drug resistant) strains. We also found out that resistance to azithromycin drug is also emerging as 70 out of 84 strains were sensitive while remaining 14 were resistant. Conclusion: According to recent antibiotic susceptibility against salmonella typhi, the most sensitive drugs are Carbapenems (imipenem or meropenem) these days. Second sensitive antibiotic is azithromycin. Key Words: Antimicrobial susceptibility, Salmonella isolates, Carbapenems, Azithromycin. How to cite: Bukhari H., Komal T., Akhtar R., Mumtaz U.S., Waheed I., Recent Antimicrobial Susceptibility Patterns of Salmonella Isolates in A Tertiay Care Hospital of Lahore. Esculapio 2021;17(01):45-48