Isolation of multidrug-resistant Salmonella in Singapore
Yee Wei Phoon1, Yuen Yue Candice Chan2, Tze Hsien Koh3
1Department of Dermatology, Singapore General Hospital, Singapore.
Abstract:
Multidrug-resistant Salmonella is a well-recognised problem worldwide, especially in developing countries such as India, where non-typhoidal Salmonella infections and enteric fever are endemic. Antimicrobial resistance, particularly to fluoroquinolones, is common and leads to the frequent use of alternative agents, such as azithromycin. We herein describe the first reported case of azithromycin-resistant Salmonella gastroenteritis in a Singaporean patient.
Insights
Multidrug-resistant Salmonella is a global health concern. This study reports the first case of azithromycin-resistant Salmonella gastroenteritis in a Singaporean patient, highlighting emerging antimicrobial resistance challenges.
Area of Science:
- Microbiology
- Infectious Diseases
- Public Health
Background:
- Multidrug-resistant Salmonella poses a significant global health threat.
- Antimicrobial resistance is prevalent, particularly in developing nations like India.
- Fluoroquinolone resistance drives the use of alternative antibiotics such as azithromycin.
Observation:
- This report details the first documented instance of azithromycin-resistant Salmonella gastroenteritis in a patient from Singapore.
- The case underscores the potential for resistance to emerge in commonly used alternative antibiotics.
Findings:
- The identification of azithromycin resistance in Salmonella signifies a critical development in antimicrobial resistance patterns.
- This finding suggests that azithromycin may be losing efficacy as a treatment option for certain Salmonella strains.
Implications:
- This case highlights the urgent need for enhanced surveillance of antimicrobial resistance in Salmonella globally.
- It emphasizes the importance of developing and implementing strategies to combat emerging resistance to alternative antibiotics like azithromycin.
- Further research is crucial to understand the mechanisms and spread of azithromycin resistance in Salmonella.


