The most common bacteria causing cellulitis are Streptococcus pyogenes, other beta-hemolytic streptococci, and S aureus. Methicillin-resistant S aureus is most common in abscesses. When skin infection is present with drainage, abscess, eschar, and/or penetrating trauma, methicillin-resistant S aureus is the most likely cause. When those features are absent, S pyogenes or other beta-hemolytic streptococci are more likely the cause. P aeruginosa is most likely to cause cellulitis in immunocompromised hosts. Cellulitis from S typhimurium is rare and is often secondary to other serious issues.
Learn more about cellulitis.
Medscape © 2023 WebMD, LLC
Any views expressed above are the author's own and do not necessarily reflect the views of WebMD or Medscape.
Cite this: Mary L. Windle. Fast Five Quiz: Cellulitis - Medscape - May 22, 2023.