Gram-Negative Bacteria

Empiric drug regimens listed for the various bacterial strains are for ADULT patients with normal renal function. Review the relevant package insert for additional prescribing information.

Gram-Negative Cocci & Coccobacilli   
>Aggregatibacter aphrophilus (formally known as Haemophilus aphrophilus)
>Bordetella pertussis (Causative agent of pertussis or whooping cough. )
>Brucella species:
1] Brucella abortus
2] Brucella canis
3] Brucella melitensis
4] Brucella suis
>Eikenella corrodens
>Haemophilus species:
1] Haemophilus influenzae
2] Haemophilus ducreyi
3] Haemophilus avium
>Moraxella catarrhalis (formerly known as Branhamella catarrhalis)
>Neisseria species:  (frequently colonize mucosal surfaces.)
1] Neisseria gonorrhoeae
2] Neisseria meningitidis
>Pasteurella multocida

Enterobacteriaceae  (Gram Negative Bacilli)   top of page
(large section – see new page)

Non-fermenting Gram-negative bacilli    top of page
[cannot catabolize glucose and therefore are not able to ferment. Non-spore forming.]
>Acinetobacter baumannii
>Achromobacter xylosoxidans
>Bordetella pertussis
>Burkholderia species:
1] Burkholderia cepacia (also known as Pseudomonas cepacia) –  important
pathogen of pulmonary infections in people with cystic fibrosis.
2] Burkholderia pseudomallei (also known as Pseudomonas pseudomallei)
>Elizabethkingia meningoseptica (Previously Chryseobacterium meningosepticum)
>Moraxella catarrhalis (formerly known as Branhamella catarrhalis)
>Pseudomonas aeruginosa
>Stenotrophomonas maltophilia (Initially classified as Pseudomonas maltophilia)

Anaerobic Gram-Negative Bacilli   top of page
>Bacteroides fragilis (most important clinically)
[Other Bacteroides species  – less common clinically:  (B. acidifaciens, B. gracilis,
B. oris, B. ovatus,  B. pyogenes , B. stercoris, B. vulgatus)]
>Bacteroides melaninogenicus (reclassified and split into Prevotella melaninogenica
and Prevotella intermedia.)
>Fusobacterium necrophorum

Other   (Gram Negative Bacilli)   top of page
>Aeromonas species:
1] Aeromonas hydrophila
2] Aeromonas veronii
3] Aeromonas shubertii
>Bartonella species:
1] Bartonella bacilliformis
2] Bartonella henselae (organism responsible for cat scratch disease)
3] Bartonella Quintana
4] Other
1] Campylobacter fetus
2] Campylobacter jejuni
>Capnocytophaga species:
1] Capnocytophaga canimorsus
2] Capnocytophaga ochracea
>Francisella tularensis
>Helicobacter pylori
>Legionella species: ( L. pneumophila)
>Plesiomonas shigelloides
>Vibrio species:
1] Vibrio cholera
2] Vibrio parahaemolyticus
3] Vibrio damsela
4] Other


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