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Therapeutic aspects of typhoidal salmonellosis in childhood: the Karachi experience
1Department of Paediatrics, Aga Khan University Medical Center, Karachi, Pakistan.
Insights
In children with typhoid, ampicillin and chloramphenicol were equally effective for drug-sensitive strains. Intravenous ceftriaxone showed better outcomes than cefotaxime for multi-drug-resistant typhoid infections.
Area of Science:
- Infectious Diseases
- Pediatric Medicine
- Microbiology
Background:
- Typhoid fever remains a significant public health concern, particularly in resource-limited settings.
- The emergence of multi-drug-resistant (MDR) strains of Salmonella Typhi complicates treatment strategies.
- Effective therapeutic options are crucial for reducing morbidity and mortality in pediatric typhoid cases.
Purpose of the Study:
- To evaluate the efficacy of different antimicrobial agents in treating culture-proven typhoid in children.
- To compare treatment outcomes for drug-sensitive and multi-drug-resistant typhoid strains.
- To assess the effectiveness of third-generation cephalosporins in managing MDR typhoid.
Main Methods:
- Retrospective analysis of 876 children with culture-proven typhoid admitted to The Aga Khan University Hospital.
- Comparison of treatment outcomes (cure rates, failure rates, time to defervescence) for ampicillin, chloramphenicol, cefotaxime, and ceftriaxone.
- Stratification of analysis based on antimicrobial susceptibility patterns of Salmonella Typhi isolates.
Main Results:
- Ampicillin and chloramphenicol showed comparable efficacy in children with drug-sensitive typhoid.
- Intravenous ceftriaxone demonstrated superior outcomes compared to cefotaxime in treating MDR typhoid.
- Children with MDR typhoid treated with ceftriaxone experienced a longer time to defervescence than those with sensitive strains.
Conclusions:
- Early recognition and appropriate second-line therapy, such as ceftriaxone, have significantly reduced typhoid case fatality rates.
- A 14-day course of ceftriaxone is effective for most hospitalized children with MDR typhoid.
- Further research is needed to explore short-course therapies and alternative agents for MDR typhoid.
Abstract:
We evaluated the response to therapy in a series of 876 children consecutively admitted to The Aga Khan University Hospital with culture-proven typhoid, including 281 cases infected with multi-drug-resistant (MDR) strains. Among sensitive isolates there was no significant difference in cure rates, failure rates and time to defervescence with either ampicillin or chloramphenicol. Of the 217 children with MDR typhoid who received therapy with third-generation cephalosporins, the outcome was significantly better with intravenous ceftriaxone compared with cefotaxime. Despite comparable cure rates, the time to defervescence was significantly longer among MDR strains treated with ceftriaxone versus sensitive strains (mean (SD): 7.2 (3.4) versus 6.3 (29) days; p < 0.05). Earlier recognition and introduction of appropriate second-line therapy has allowed us to reduce the case fatality rates of typhoid to under 1%. Although a 14-day course of ceftriaxone can be used successfully to treat most children hospitalized with MDR typhoid, there is a need to evaluate the role of short-course therapy or alternative therapeutic agents.
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