Gram Negative Bacteria

Bacterial Strain Sections

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.

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Gram-Negative Cocci & Coccobacilli
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>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

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Enterobacteriaceae (Gram Negative Bacilli)
(large section – see new page)
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Non-fermenting Gram-negative bacilli
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[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)

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Anaerobic Gram-Negative Bacilli
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>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

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Other (Gram Negative Bacilli)
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>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
>Campylobacter:
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

Bacterial Strain Sections

Gram-Negative Bacteria

BACTERIAL PATHOGENS