• Zihan Zhao, Yarui Wu, Xuhua Geng, Congrui Yuan, Yi Fu, and Guibin Yang.
• Department of Gastroenterology, Aerospace Center Hospital, Peking University, Beijing, China.
• Medicine (Baltimore). 2024 Aug 9; 103 (32): e39213e39213.

PurposeTo compare the efficacy, recurrence rate, adverse event rate and mortality of fidaxomicin compared with vancomycin in treating different types of Clostridium difficile infection (CDI).MethodsA systematic search was conducted on PubMed, Embase, Web of Science, Cochrane Library and clinical trial registration databases for research on fidaxomicin versus vancomycin in the treatment of CDI and the retrieval period extended from the establishment of the database to July 22, 2022. A total of 15 studies were included, including 8 RCTs and 7 retrospective cohort studies.ResultsResults showed that there was no significant difference in the overall efficacy of the treatment between fidaxomicin and vancomycin, and results in the subgroups of CDI hypervirulent strains and recurrent CDI were obtained, but vancomycin was more effective than fidaxomicin in the treatment of severe CDI (RR = 0.94, 95% CI: 0.90-0.98, P < .01). Results showed that fidaxomicin is superior to vancomycin in terms of 40-day recurrence rate (RR = 0.52, 95% CI: 0.38-0.70, P < .01), 60-day recurrence rate (RR = 0.38, 95% CI: 0.21-0.69, P < .01) and 90-day recurrence rate (RR = 0.62, 95% CI: 0.50-0.77, P < .01). For the recurrence rate of the treatment in CDI hypervirulent strains, severe CDI and recurrent CDI, there was no significant difference between the 2 groups. In addition, there was no significant difference in the incidence of clinical adverse reactions, and same outcomes appeared in all-cause mortality at 40-day, severe CDI and recurrent CDI, but fidaxomicin was superior to vancomycin in all-cause mortality over 60-day (RR = 0.57, 95% CI: 0.34-0.96, P = .03).ConclusionThere were no significant differences between fidaxomicin and vancomycin in the treatment of CDI in therapeutic effectiveness and adverse reactions, while fidaxomicin was superior to vancomycin in terms of recurrence rate and long-term mortality, and vancomycin is more effective in treating severe CDI.Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.

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