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micro biology test 4

STUDY
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Greek word staphyle means
Bunch of grapes
Genera staphylococcus belongs to
Pyogenic
Pyogene
Producer of pus
Two genera of staphylococcus
Streptococcus, neisseria
Halophilic
Salt lover
Sodium chloride concentrations staphloccus can survive in
7.5%-20.2%
Staphylococcus aureus minor infections
Pimples and boils, wounds, impetigo, lesions, sore throats
Streptococcus viridians
Mainly habitants of the respiratory tract.
Not usually Pathogenic.
Leading cause of bacterial endocarditis
Streptococcus lactia
Characterized by variable Hemolysis.
Has commerical value as this organism can be found in milk and milk products
Streptococcus pneumonia appears as
Gram (+), in pairs, singly, or in short chains
Streptococcus pneumonia
When this organism grows to such a large proportion in the lungs, the patient can actually drown from the production of too much liquid in their lungs.
Neisseria
Gram (+) occurring in pairs or singularly with the appearance of a coffe bean.
Neisseria gonorrhea street names
Drip, strain, clap, dose/puse, nail
Neisseria gonorrhea are
Non-motile, non-sporulating organisms.
Fomite
Any substance that absorbs and transmits infectious material
Neisseria grows well on
Modified thayer-martin (mtm)
Bacillus anthracis
Chief human pathogen; seldom seen in the average hospital or lab.
Koch
First to demonstrate anthrax as a specific organism
Pastereur
Founded the first bacterial vaccine for an infectious disease
Anthrax is also known as
Ragpickers diease
Cutaneous anthrax
Most common form seen in the us.
Goes from lesions to papule necrotic ulcer.
Pulmonary anthrax
Affects the lungs and pleura.
runs a rapid course and ends in fatality
Clostridium
All are motile by means of peritrichous flagella with the exception of c perfingens
3 types of clostridium
c tetani, c perfingens, c botulinum
Clostridium perfringens
Usually boxcar shaped
Usually produces a double zone of beta hemolysis
Clostridium botulinum type A
Most potent toxin kown to man
Corynebacterium
Resemble Chinese letters and palisades, and widely distributed in nature
Corynebacterium is the causative agent of
Diphtheria
Eschericheria
Intestinal inhabitant, usually causes gastroenteritis
Major cause of nosocomial infections
Escherichia, klebsiella, and enterobacter
Typhoid
Caused by s. typhii
Signs of salmonella typhoid
Rose spots on abdomen
Food products concerned with salmonelloses
Fish, meat, fowl and eggs, and dairy products that have been improperly cooked
Proteus
Noted for swarming growth on media
3 types of vibrio
V. cholerae, V. parahaemolyticus, V. El Tor
Vibrio Cholera incubation period
2-5 days in small bowel
Vibrio Cholera looks like
Comma or S- shaped, can form filaments
Vibrio cholera can remain viable for
7-10 days on cool moist fruits and vegetables
Symptoms of vibrio cholera
Rice, watery stools
Where Pseudomonas aeruginosa grows well
on floors, A/C vents, soaps, antiseptics; almost anywhere
Pseudomonas smells
Grape like odor
Meliodosis
Acute form of pneumonia containing multiple abscesses, with septicemia and possibly death
Pathogenic spirochetes
Borrelia, treponema, leptospira
How spirochaetaceae moves
Bundle of fibers called axial filament attached at the cell poles and wrapped around the cell in a spiral fashion
Serologic tests for syphilis
Non-treponemal, treponemal
Non treponemal
Can cause false positives in patients with other infectious diseases
Mycoplasmataceae
Require cholesterol for growth
Mycoplasma
Most significant for humans, causative agent of primary atypical pneumonia
Ureaplasma urealyticum
Causative of non-gonococcal urthritis in males
Species of chlamydia
C. trachomatis. C. Pneumonia, C. Psittaci
Endemic Trachomatis
A repetitive conjunctival infection ultimately leading to blindness and associated with A-C
Chlamydia
Estimated that 70% of woman and 50% of men are asymptomatic
Chlamydia psittaci
Epidemic of all bird species and human acquire it from inhalation of aerosols
Mycobacterium
Hard to stain due to lipids, one of the stains are Zielh neelsen
Mycobacterium tuberculosis
Primary site of infections is the lungs
Mycobacterium bovis
Pasteurization kills is
Rickettsia
Has all the components for reproduction except energy
Rickettsia Prowazeki
causes endemic typhus
Rickettsia rickettsii
causes rocky mountain spotted fever
Rapid plasma reagin test
Nontreponemal testing procedure for serological testing of syphilis
Reagin
Antibody-like substance present in the serum
RPR test materials
18 gauge needle w/o bevel and plastic bottle
Qualitative procedure
Rotate card for 8mins at 100 rpm