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ChromID VRE medium plated with E. faecalis (A) or E. faecium (B) and EVA medium with E. faecium (C). On chromID VRE colonies of E. faecalis appear blue-green and colonies of E. faecium appear purple, and on EVA colonies of E. faecium dark brown. For the purposes of the present study, rectal swabs were plated to chromID VRE and EVA after a 24-h enrichment culture, and the plates were observed after 48 h of growth.
