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Current Management Strategies for Stenotrophomonas maltophilia

Chang YT, Lu PL, Paterson DL

Infectious disease clinics of North America, 2026

Abstract

Optimal therapeutic strategies for Stenotrophomonas maltophilia infections remain largely undefined. Current evidence tentatively supports combination therapy in immunocompromised hosts and severe infections, as no single agent reliably provides bactericidal activity. However, no specific regimen has been proven superior. Traditional agents such as trimethoprim-sulfamethoxazole, minocycline, and levofloxacin remain essential components of treatment. New antimicrobials, including cefiderocol and aztreonam-avibactam, are promising options, but further clinical data are required to validate their efficacy. To date, no randomized controlled trials have been conducted in S maltophilia infections, and well-designed studies are urgently needed to provide definitive answers.

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