Microbio Flashcards
Single-cell prokaryotic microorganisms
BACTERIA
Single-cell or multicellular eukaryotic organisms
FUNGI, PARASITES
Unicellular eukaryotic organisms
YEASTS
: Dependent on host cells for survival and therefore are not considered cellular organisms but rather INFECTIOUS AGENTS
VIRUSES
: Most common method of treating infectious waste ; SAFEST METHOD to ensure that no infective materials remain in samples or containers when disposed
INCINERATION
: Sensitive to temperature changes
N. meningitidis
: Sensitive to changes in pH
Shigella spp.
Determination of inducible-clindamycin resistance in staphylococci and streptococci
D-ZONE TEST:
Gray, translucent, smooth, glistening; may have dry, CLAYLIKE CONSISTENCY
Neisseria elongata:
Friable “hockey puck” consistency
Moraxella catarrhalis
0.5% sodium deoxycholate lyses Vibrio cells; used to differentiate Vibrio spp. (positive) from Aeromonas (negative)
STRING TEST
Chancroid, soft chancre, School of fish arrangement, railroad track appearance
Haemophilus ducreyi
Large; boxcar shape
C. perfringens
TRUE GERM TUBE
C. albicans, C. dubliniensis
Subacute sclerosing panencephalitis (SSPE)
MEASLES VIRUS:
LOEFFLER’S SYNDROME (transient pulmonary infiltration; day-to-day clearing in 3 to 14 days; associated with marked peripheral eosinophilia)
Ascaris lumbricoides:
Swollen belly syndrome
Strongyloides fuelleborni
(abdominal angiostrongyliasis): Patient may experience lower right quadrant; ABDOMINAL PAIN SIMILAR TO THAT MANIFESTED IN APPENDICITIS
Parastrongylus costaricensis
Thioglycollate broth boiled for 10 minutes
To drive off oxygen
Selection and enrichment for Streptococcus agalactiae in female genital specimens
Todd-Hewitt broth
Autoclave sterilization, membrane filtration
Culture media sterilization
Bacterial count 75,000 per mL when raw; not to exceed 15,000 bacteria per mL once pasteurized
Grade A milk
Positive malonate test:
Blue
Negative malonate test:
Green, yellow