Non-fermentative Gram Negative Bacilli. Genus Pseudomonas

Question 1

Non-fermentation gram negative bacilli

Classification

Answer 1

Clinically important genera

1) genus Pseudomonas
2) genus acinetobacter
3) genus stenotrophomonas
4) genus burkholderia
5) genus moraxella

PAS Be Mine

Question 2

General characteristics

Answer 2

Aerobic non fermentative rods
- acinetobacter spp. And Moraxella spp. Appear also as coccobacilli and cocci

• Non-fastidious
• Inhabit soil and water
• An important role in the decomposition of organic matter
• Very adaptive organisms
• Can be isolated from many sites in the hospitals environment:
  Respiratory care equipment
  Baths
  Water faucets
  Floors
  “In disinfectant solutions”
• resistant to chemical disinfection
• resistant to commonly used anti microbial drugs
• several species are pathogenic for plants and animals
  -some species are important opportunistic pathogens that infect individuals with impaired host defence
• human infection usually are severe and difficult to treat

Question 3

Genus Pseudomonas

Answer 3

5 groups: I to V

Group I:

Fluorescent:
P.aeruginosa
P.fluorescens
P.putida

Non-fluorescent:
P.stutzeri
P.mendocina