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Extended Spectrum Beta Lactamase producing Cephalosporin resistant Salmonella Typhi, reported from Rawalpindi,
Tehmina Munir1, Munir Lodhi2, Jawad Khaliq Ansari3
1Department of Microbiology, Army Medical College, NUST, Rawalpindi, Pakistan.
Abstract:
Typhoid is endemic in many parts of southeast Asia. Due to the resistance of the organism to first line of antibiotics (ampicillin, chloramphenicol, cotrimoxazole) as well as to fluoroquinolones, third generation cephalosporins have been in use for the empiric treatment of typhoid for years. However an increasing incidence of Salmonella Typhi is being reported sporadically from various regions. We report a case of typhoid due to Salmonella Typhi which was non-responsive to treatment with a cephalosporin, was found to be multidrug resistant and resistant to ciprofloxacin and third generation cephalosporin as well. The patient was finally treated successfully with intravenous administration of a carbapenem.
Insights
Multidrug-resistant Salmonella Typhi is emerging, causing treatment failures even with third-generation cephalosporins. Carbapenems offer a successful treatment option for these complex typhoid fever cases.
Area of Science:
- Infectious Diseases
- Microbiology
- Antimicrobial Resistance
Background:
- Typhoid fever, caused by Salmonella Typhi, is prevalent in Southeast Asia.
- Antibiotic resistance to first-line drugs and fluoroquinolones necessitates alternative treatments.
- Third-generation cephalosporins are commonly used for empiric typhoid treatment.
Observation:
- A case of typhoid fever resistant to third-generation cephalosporins and ciprofloxacin is presented.
- The Salmonella Typhi strain exhibited multidrug resistance.
- Standard antibiotic regimens proved ineffective for this patient.
Findings:
- The Salmonella Typhi isolate demonstrated resistance to multiple antibiotics, including cephalosporins and fluoroquinolones.
- Empiric treatment with a cephalosporin failed to resolve the infection.
- Intravenous carbapenem administration led to successful treatment.
Implications:
- Highlights the growing threat of multidrug-resistant typhoid.
- Suggests carbapenems as a crucial alternative for treating resistant typhoid strains.
- Emphasizes the need for continuous surveillance of antimicrobial resistance patterns in Salmonella Typhi.
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