A member asked:

Can e. coli ever be a gram positive?

2 doctors weighed in across 2 answers
Dr. Tony Ho answered

Specializes in Internal Medicine

No: Properly done gram stain should never show e coli as gram positive.

Answered 3/26/2013

5.2k views

Thank
Dr. Michael Ein answered

Specializes in Infectious Disease

No: E. Coli is always gram negative.

Answered 3/27/2013

5.2k views

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