Which types of bacteria cause necrotizing fasciitis?

Updated: Sep 02, 2020
  • Author: Steven A Schulz, MD; Chief Editor: Michael Stuart Bronze, MD  more...
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Group A beta-hemolytic streptococci have historically been noted as a cause of necrotizing fasciitis, but Haemophilus aphrophilus and S aureus are also associated with the condition, and some patients have mixed infections involving multiple species of bacteria, including mycobacteria, as well as fungi. [44, 45]

A synergistic infection with a facultative anaerobic bacterium may be significant. In 1 patient, Phycomycetes appeared to be responsible for necrotizing fasciitis.

Streptococcus pneumoniae is a rare cause of necrotizing fasciitis. [44] In one patient, S pneumoniae serotype 5 was also isolated. This serotype 5 antigen is included in the polysaccharide 23-valent pneumococcal vaccine, highlighting the value of pneumococcal immunization.

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