MSD Manual

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Enterococcal Infections

By

Larry M. Bush

, MD, FACP, Charles E. Schmidt College of Medicine, Florida Atlantic University

Reviewed/Revised Mar 2023
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Enterococcal infections are caused by a group of gram-positive Overview of Gram-Positive Bacteria Gram-positive bacteria are classified by the color they turn after a chemical called Gram stain is applied to them. Gram-positive bacteria stain blue when this stain is applied to them. (Other... read more , sphere-shaped (coccal) bacteria called enterococci, which normally reside in the intestine of healthy people but sometimes cause infection.

There are more than 17 species of enterococci. Many species normally occupy the intestinal tract and do not usually cause disease. These bacteria, called resident flora Resident Flora Healthy people live in harmony with most of the microorganisms that establish themselves on or in (colonize) nonsterile parts of the body, such as the skin, nose, mouth, throat, large intestine... read more , cause disease only under certain circumstances—for example, when they enter other parts of the body.

Enterococcus faecalis and Enterococcus faecium are the species that most commonly cause infections in people.

Enterococci typically cause the following:

Symptoms of enterococcal infections depend on the location of the infection.

Treatment of Enterococcal Infections

  • Antibiotics

Treatment depends on where the infection is, but doctors usually give antibiotics and drain any abscesses.

NOTE: This is the Consumer Version. DOCTORS: VIEW PROFESSIONAL VERSION
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