Gram negative Bug DDX

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Gram negative cocci (diplococcus)

Nisseria and Moraxilla

N. Meningitidis

MALTOSE FERMENTING, Gram neg cocci With CAPSULE (Thyer martin VCN agar)

N. Gonorrhoeae

MALTOSE NONFERMENTING, Gram neg cocci With PILI (Thyer martin VCN agar)

Moraxilla

Oxidase positive Gram neg cocci (Pna in COPD)

Coccoid-Coccobacillus

Resp. Pathogens! HPBB (H. flu, Pasturella, Brucella, Bordetella)

H. influenza

Gram neg coccobacillus requires Factors V and X

Pasturella

Gram neg coccobacillus in animal bites

Brucella

gram neg coccobacillus in brucellosis

Bordetella pertussis

Gram neg coccobacillus in pertussis (BORDET-GENGOU POTATO AGAR)

Gram negative Rods

Fast or slow Lactose Fermenting verse oxidase pos or neg NON-Lactose fermenting GNR

Fast Lactose fermenting GNR

Klebsiella, E. coli, enterobacter

Klebsiella

oxidase positive Fast Lactose fermenting GNR (NON-MOTILE, WITH CAPSULE)

E. Coli

Facultative CO2 producing Fast Lactose fermenting GNR

Serratia

Slow Lactose fermenting GNR (RED PIGMENT!)

Pseudomonas

Oxidase positive Non-Lactase fermenting GNR (polar flagella, beta hemolytic, exotoxin decreases EF2)

Oxidase negative non-lactose fermenting GNR

Shigella, Salmonella, Proteus

Shigella

NON-MOTILE Oxidase negative non lactose fermenting GNR

Salmonella

H2S PRODUCING Oxidase negative non lactose fermenting GNR

Proteus

SWARMING Oxidase negative non lactose fermenting GNR (urease increases urine pH)

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