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. 2014 Oct 31:823–846.e5. doi: 10.1016/B978-1-4557-4801-3.00069-2

TABLE 69-1A.

Causative Agents of Acute Pneumonia: Bacteria

COMMON UNCOMMON

  • Streptococcus pneumoniae

  • Staphylococcus aureus

  • Haemophilus influenzae

  • Mixed anaerobic bacteria (aspiration)
    • Bacteroides spp.
    • Fusobacterium spp.
    • Peptostreptococcus spp.
    • Peptococcus spp.
    • Prevotella spp.
  • Enterobacteriaceae
    • Escherichia coli
    • Klebsiella pneumoniae
    • Enterobacter spp.
    • Serratia spp.

  • Pseudomonas aeruginosa

  • Legionella spp. (including L. pneumophila and L. micdadei)

  • Acinetobacter spp.

  • Actinomyces and Arachnia spp.

  • Bacillus spp.

  • Moraxella catarrhalis

  • Campylobacter fetus

  • Eikenella corrodens

  • Francisella tularensis

  • Neisseria meningitidis

  • Nocardia spp.

  • Pasteurella multocida

  • Proteus spp.

  • Burkholderia pseudomallei

  • Salmonella spp.

  • Enterococcus faecalis

  • Streptococcus pyogenes