Gram Negative

Bacterial Morphology Probable Organisms
  • Bacilli
Enterobacterales
P. aeruginosa
Stenotrophomonas maltophilia
Other nonfermentative bacilli
  • Coccobacilli/ pleomorphic bacilli
Aggregatibacter spp
Cardiobacterium hominis
Eikenella corrodens
Haemophilus influenzae/ parainfluenzae
Kingella spp
Bacteroides spp
Brucella spp
Pasteurella spp
Other anaerobic bacilli
  • Fusiform bacilli
Fusobacterium spp
Capnocytophaga spp
  • Curved bacilli
Campylobacter spp
Vibrio spp
  • Diplococci
Neisseria spp
Moraxella catarrhalis
Acinetobacter spp