Table 1.

Characteristics of the test organisms

Organism	Source	Characteristics
Acinetobacter baumanii	Clinical isolate	Non-spore-forming Gram-negative bacterium
Vancomycin-resistant Enterococcus faecium	Clinical isolate	VanB type Gram-positive non-spore-forming bacterium
NDM1-producing Klebsiella pneumoniae	ATCC BAA-2146	NDM1-producing non-spore-forming Gram-negative bacterium
Methicillin-resistant Staphylococcus aureus (MRSA)	Clinical isolate; pulsed-field gel electrophoresis type USA 400	Non-spore-forming Gram-positive bacterium
Escherichia coli	Clinical isolate	NDM1-producing Non-spore-forming Gram-negative bacterium
Bacteriophage Phi X174	ATCC 13706-B1	Nonenveloped single-stranded DNA virus (27 µm particle size)
Bacteriophage Phi6	HER 102	Enveloped, double-stranded RNA virus (85 µm particle size)
Bacteriophage MS2	ATCC 15597-B1	Nonenveloped, single-stranded RNA virus (26 µm particle size)
Candida auris	Centers for Disease Control and Prevention strain 0385	Emerging fungal pathogen that is often resistant to antifungal agents
Candida albicans	ATCC 10231	Yeast that commonly colonizes the gastrointestinal tract
Clostridioides difficile	ATCC 43598	Spore preparation
Bacillus subtilis	ATCC 6051	Spore-forming Gram-positive bacterium

Abbreviations: ATCC, American Type Culture Collection; HER, Félix d'Hérelle Reference Center for bacterial viruses of the Université Laval; NDM, New Delhi metallo-betalactamase.