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gram + stain color

purple-blue color
gram - color

red- retain safranin and iodine washes
shapes of bacteria
- Cocci
- rods (bacilli)
- spiral- dark field florecence
- curved-ex. vibro (not in US)
Cocci in clusters

Staphylococci
cocci chain

streptococci
staphylococcus are catalse?

positive
streptococcus is catalase?

negative
what staphylococcus is coagulase positive?

Staph. Aureus
Group A

Strept. Pyogenes
Group B

Strept. agalactiae
Group D
- Enterococcus faecalis
- Enterococcus faecium
List Staphs
- Staph aureus
- epidermidis
- saprophyticus
List Strepts
- Pyogenes
- agalactiae
- pneumonia
Gram positive Cocci
- Streptococcus pneumoniae
- strept. viridans
Gram Negative Cocci
- Moraxella catarrhalis --- causes URI
- Neisseria gonorrhea---STD
- Neisseria Meningitidis--- meningitis
these are invasive species
Gram + Rods

Listeria monocytogenes -- LRTI especially in alcoholics
Rods gram -
enterobacteria- colonized in gut
- E. Coli
- Klebsiella pneumoniae
- proteus mirabilis
- proteus vulgaris
- providencia stuartii
- enterobacter spp.
- Morganella morganii
- Serratia spp.all are oxidase neg
Rods Gram -
nonenterobacteriaceae
- pseudomonas aeruginosa-most pathogenic gram - rod likely in immunocompromised
- stenotrophomonas (Xanthomonas) maltiphilia
- hemophilus influenza
ANEROBES gram + rod
- Clostridium difficile- vanco not absorbed therefore inter luminal conc high
- start metronidazole because narrow and less resistance no response 3-5 day switch to oral vanco
ANEROBES: gram - rods
- Bacteroides spp.
- B. fragilis (usual pathogen)
note: causes foul smelling abscesses
Spirochetes
- Treponema pallidum
- Borrelia burgdorferi
Atypical organsms
why atypical?
- ans: cant be grown
- Chlamydia trochomatis -STD
- Chlamydia pneumoniae
- Legionella pneumoniae
- mycoplasma pneumoniae (walking) these are water loving

Author

Anonymous

7940

Card Set

Description

bugs

Updated

2010-02-24T07:02:27Z

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