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Enterococcus faecalis


Non-motile, gram-positive, facultatively anaerobic, microbial species that normally dwells in the gastrointestinal tract and (female) genital tract of humans and other mammals; may become pathogenic, especially in nosocomial environment, and cause life-threatening conditions mainly because of the high antibiotic resistance associated with this group


The species is formerly known as Streptococcus faecalis, also known as Group D of the genus Streptococcus. However, DNA analysis showed that this species is more closely related to the genus Enteroccoccus.

E. faecalis is an opportunist pathogen, which means that it is a commensal in the gastrointestinal tract; however, when the immune function is compromised, the microbe can grow in number and becomes pathogenic. Some of the commonly associated human diseases caused by E. faecalis are as follows:

E. faecalis is commercially used as probiotics in feeds for cattle and poultry animals since it is found to diminish diarrhea in these animals.

Scientific classification:

  • Domain: Bacteria
  • Kingdom: Eubacteria
  • Phylum: Firmicutes
  • Class: Bacilli
  • Order: Lactobacillales
  • Family: Enterococcaceae
  • Genus: Enterococcus

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Re: Re:

... agalactiae 14=Streptococcus mutans 3=Streptococcus dysgalactiae 15=Enterococcus faecalis (Strep. faecalis) 4=Streptococcus equisimilis 16=Enterococcus faecium (Strep. faecium) ...

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by microbiologyhelp
Thu Dec 12, 2013 6:12 pm
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Topic: ID OF UNKNOWN?!?!
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Need help Identifying an unknown

... subtilis Pseudomonas aeruginosa Staphylococcus aureus Proteus vulgaris Enterococcus faecalis Escherichia coli Bacillus megaterium Enterobacter aerogenes Staphylococcus epidermidis ...

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by stks7rafe
Sun Apr 22, 2012 8:22 pm
Forum: Microbiology
Topic: Need help Identifying an unknown
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Views: 2716

antibiotic resistance transfer.

Dear all, Enterococcus faecalis JH2-2 and E. faecium 64/3 as quality control and positive control strains for conjugative plasmids study. ...

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by nawaz82
Thu Apr 01, 2010 6:30 pm
Forum: Microbiology
Topic: antibiotic resistance transfer.
Replies: 4
Views: 2006

Bacterial communication in Gram positive cells

... regulated. Also any examples would be helpful I know one so far that Enterococcus faecalis uses QS to form a Biofilm, but any others would be a great help.

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by mmoir125
Thu Mar 25, 2010 1:19 am
Forum: Microbiology
Topic: Bacterial communication in Gram positive cells
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Identifying unknown

... only gram positive bacteria (that I know of) that is indole positive is Enterococcus faecalis (also called Streptococcus faecalis) and as other Strep bacteria they are catalase ...

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by Cat
Sat May 02, 2009 5:33 pm
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Topic: Identifying unknown
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