BACTERIOLOGY Flashcards
Friedlander’s Bacillus
Klebsiella pneumoniae
Eberth’s bacillus
Salmonella typhi
Garter’s bacillus
Salmonella enteritidis
Aka Ritter’s Disease
Scalded Skin Syndrome
Causes Bacterial Endocarditis
S. epidermidis
Most common cause of UTI in young, sexually active females
S. saprophyticus
Most common cause of UTI
E. coli
Most common cause of bacterial food poisoning in the US
Staphylococcus aureus
Diagnostic test used in scarlet fever caused by GAS
Schultz-Charlton test
Susceptibility test used in scarlet fever caused by GAS
Dick’s test
Most serious sequela of S. pyogenes.
Presence of aschoff bodies
Rheumatic heart fever
Occurs after a cutaneous or pharyngeal infection.
Presence of dysmorphic rbc’s
Acute glomerulonephritis
Causes neonatal meningitis
Mastitis in cattle
GBS
Wide zone of b-hemolysis
S. pyogenes
Narrow zone of b-hemolysis
S. agalactiae
Arrowhead-shaped zone of enhanced hemolysis at the juncture of the two organisms (CAMP test)
GBS (S. agalactiae)
Block/Rectangular shaped zone of enhanced hemolysis (Shovel head)
L. monocytogenes
Bow tie zone of enhanced hemolysis (Reverse CAMP)
C. perfringens
Causes lobar pneumonia
S. pneumoniae
Most common cause of bacterial meningitis in ADULTS
S. pneumoniae
Coin with a raise rim appearance
S. pneumoniae
Causes Subacute bacterial endocarditis from individuals with damaged or prosthetic heart valves
Viridans streptococci
Tooth decay & Gingivitis
S. mutans
Meaning “flow of seed”
N. gonorrhoeae
Cause of Fitz-Hugh-Curtis syndrome
N. gonorrhoeae
Appearance of violin string adhesions of the peritoneum to the liver
Fitz-Hugh-Curtis syndrome
Added to the blood culture media to neutralize the effect of SPS against N. gonorrhoeae
Gelatin
1 cause of STD
Chlamydia trachomatis
2 cause of STD
N. gonorrheae
Causes WATERHOUSE-FRIEDRICHSEN SYNDROME
N. meningitidis
Third most common cause of acute otitis media (middle ear infection)
Moraxella catarrhalis
1 most common cause of acute otitis media (middle ear infection)
S. pneumoniae
2 most common cause of acute otitis media (middle ear infection)
H. influenzae
Hockey puck appearance and older colonies may give a “wagon-wheel”
M. catarrhalis
Dry, claylike consistency on SBA
N. elongata
Most common cause of UTI’s in humans
Uropathogenic E. coli (UPEC)
The most common cause of a diarrheal disease sometimes referred to as TRAVELER’s diarrhea.
Weanling diarrhea
Delhi belly
Turista
ETEC
Infantile diarrhea
No toxin produced
Stool: Watery diarrhea with large amount of mucus but no apparent blood.
EPEC
Produce dysentery
Diarrheal illness is very similar to that produced by Shigella spp.
Stool: Minimal amounts of stool with BLOOD and MUCUS WITH LEUKOCYTES
EIEC
Shiga toxin-producing E. colo (STEC)/ Verotoxin-producing E. coli (VTEC)
Stool: Watery and bloody diarrhea W/OUT LEUKOCYTES
EHEC
Diarrheal syndromes and UTIs
Adhere to HEp2 cells, packed in an aggregative “stacked-brick pattern”
EAEC or EAggEC
Causes gastroenteritis/enterocolitis and enteric fevers
Salmonella
The most common manifestation of salmonellosis
Gastroenteritis/Enterocolitis
The most severe form of enteric fever
Typhoid fever
Rose spots
Pea soup stool
S. typhi
Currant jelly-like sputum
K. pneumoniae
Rusty sputum
S. pneumoniae
The only shigella that is positive for ODC and ONPG
S. sonnei
MUG negative
E. coli O157:H7
Emits dirty, musty odor like that of potatoes
Serratia odorifera
Resembles E. cloacae but can be differentiated by its YELLOW PIGMENT, WHICH INTENSIFIES at 25C
Enterobacter sakazakii
The only species of citrobacter that is H2S(+)
C. freundii
Source of OX-2 and OX-19
P. vulgaris
Source of OX-K
P. mirabilis
STALACTITE PATTERN appearance on broth culture.
Rough, cauliflower appearance at 48 hours on BAP
Y. pestis
Indole test detects what enzyme?
Tryptophanase
Indole test reagent
PDAB
An indole test preferred for Anaerobes?
Ehrlich
An indole test preferred for Enterobacteria
Kovac
Principle: Mixed acid fermentation pathway
Medium: Clark and Lubs medium
Methyl Red test
Principle: Butylene glycol pathway
Detects: ACETOIN
Positive: RED
Reagents: a-napthol, 40% KOH
Voges Proskauer
Positive and negative result in Citrate test
Positive: BLUE
Negative: GREEN
Entrobacter spp. which is LDC and ODC positive
E. aerogenes
At which pH does the Methyl Red test becomes positive
4.5
Below 4.4 methyl red becomes RED
Phenol red test becomes positive at pH?
6.8
Putrescine is an alkaline amine product of what bacterial enzyme?
Ornithine decarboxylase
Cadaverine is an alkaline amine product of what enzyme?
Lysine decarboxylase
Citrulline is an alkaline amine product of what bacterial enzyme?
Arginine decarboxylase
Malonate test used to differentiate which members of Enterobacteriaciae?
Salmonella subgroups 2,3 (former Arizona)
Causes clear stool
Vibrio cholerae
Shooting star motility
Vibrio spp. except V. metschnikovii
Kommabacillus
Rice watery stool
String test positive (0.5% sodium desoxycholate)
Pfeiffer’s phenomenon
V. cholera
Uses 2% sodium desoxycholate (bile solubility test)
S. pneumoniae
Enrichment medium for V. cholerae
Alkaline peptone water (pH 8.4)