Research Finds Fidaxomicin Extra Efficient Than Metronidazole, Vancomycin for Clostridioides difficile An infection

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Shedding of Clostridioides difficile was discovered to be extra successfully diminished with fidaxomicin remedy in contrast with vancomycin and metronidazole, in accordance with outcomes of a potential, randomized trial revealed in Scientific Infectious Illnesses.

Hospitalized sufferers (N=31) recognized with C difficile an infection between 2014 and 2017 have been randomly assigned to obtain both oral metronidazole 500 mg each 6 hours (n=10), oral vancomycin 125 mg each 6 hours (n=10), or oral fidaxomicin 200 mg each 12 hours (n=11) for a minimum of 10 days. C difficile shedding was assessed in affected person stool and on 5 high-touch surfaces.

The median age of sufferers was 61 years (interquartile vary [IQR], 55-70); 48% have been ladies.

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C difficile was detected on a minimum of 1 floor for many sufferers (74%). Surfaces discovered to be contaminated most continuously included the lavatory ground (27.0%) and bathroom (17.7%). Contamination different on the premise of antibiotic remedy; sufferers on metronidazole had the very best contamination price (21.4%; 95% CI, 18.0-25.2), adopted by fidaxomicin (13.1%; 95% CI, 10.7-15.9; P =.04) and vancomycin (6.3%; 95% CI, 4.7-8.3; P <.01).

Baseline C difficile shedding was related to environmental contamination (odds ratio [OR], 1.99; 95% CI, 1.35-2.93 per log10 colony forming models [CFU]/g stool; P <.01). Solely sufferers receiving fidaxomicin remedy have been discovered to be related to reductions in environmental contamination over time (OR, 0.83; 95% CI, 0.70-0.99; P =.04).

In stool, shedding declined extra quickly amongst sufferers on fidaxomicin (-0.36; 95% CI, -0.52 to -0.19 per log10 CFU/g stool; P <.01) or vancomycin (-0.17; 95% CI, -0.34 to -0.01 per log10 CFU/g stool; P =.05) in contrast with metronidazole (-0.01; 95% CI, -0.10 to 0.08 per log10 CFU/g stool).

Most sufferers have been contaminated with a single ribotype (92.6%), and 88.8% of sufferers have been contaminated with the ribotype detected of their room.

This research could have been restricted by its small pattern measurement and unblinded design.

These knowledge point out that C difficile shedding and environmental contamination have been extra enormously diminished with fidaxomicin in contrast with metronidazole or vancomycin therapies.

Disclosure: Some research authors declared affiliations with biotech, pharmaceutical, and/or gadget firms. Please see the unique reference for a full checklist of authors’ disclosures.


Turner NA, Warren BG, Gergen-Teague MF, et al. Affect of oral metronidazole, vancomycin, and fidaxomicin on host shedding and environmental contamination with Clostridioides difficile. Clin Infect Dis. Revealed on-line Could 21, 2021. doi:10.1093/cid/ciab473

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