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Block 3 Found Sci > 3-Disease Causing Bacteria > Flashcards

3-Disease Causing Bacteria Flashcards

1
Q

classifying and grouping

A
  1. taxonomic- 16s rRNA, cell envelope structure, shape arrangement, metabolic indicator
  2. nontaxonomic- lifestyle, unique characters, infection pattern
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2
Q

anaerobes more likely cause

A

abscesses bc lack oxygen

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3
Q

mycobacterium tuberculosis cause

A

tissue tropism

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4
Q

clinical approach

A
  1. site of infection and symtomology
  2. quick tests to ID pathogens
  3. sensitivity testing
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5
Q

corynebacterium diptheria

A

highly pleomorphic
causes diptheria, pharyngitis, can lead to death

TDaP vaccine

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6
Q

listeria monocytogenes

A

-short rods
-intracellular pathogen
-raw vegetables and ready to eat meats
-age extremes and preg high risk

survive at high salt, wide pH, and 1-45 celcius

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7
Q

how divide gram + cocci

A

whether they produce catalase or not

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8
Q

staphylococcus

A

gram + cocci cluster catalase +

grow in variety of conditions, many on skin or nares

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9
Q

medically relevant staphylococcus

A
  1. S. aureus- golden appearance, not coag
  2. S. saprophyticus- saprophyte
  3. S. epidermidis- skin

2 & 3 test by novobiocin sensitive, will coagulate

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10
Q

MRSA

A

methicillin resistant S. aureus
-resist to every beta-lactam

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11
Q

hemolysis pattern alpha

A

green = partial hemolysis on blood agar

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12
Q

beta hemolysis

A

complete clearing, hemolysis on blood agar

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13
Q

gamma hemolysis

A

no discoloration, no hemolysis

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14
Q

streptococcus

A

gram + cocci catalase neg in chains

most facultative anaerobes

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15
Q

GAS- strep. pyogenes

A

transient colonizer or oropharync inkids/young adults

strep throat, scarlet fever,

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16
Q

GBS-strep. agalactiae

A

normal microbiota of GI and GU

preg women and neonates

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17
Q

viridans group strep

A

no lancefield antigens

Strep. pneumoniae
E. facecalis and facecium

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18
Q

Strep. pneumoniae

A

gram + diplococci in chains
will lyse in bile salts

19
Q

E. faecalis and faecium

A

group D strep

UTIs

20
Q

diplococci aerobic

A
  1. neisseria meningitidis (maltose +)
  2. neisseria gonorrhea (maltose -)
21
Q

Neisseria spp

A

gram - cocci in pairs, coffee bean shape
-miningitidis and gonorrhoeae

22
Q

moraxella catarrhalis

A

gram - diplococci
-bronchitis, sinusitis, middle ear infection

23
Q

pseudomonas aeruginosa

A

gram neg rod, NON ferment
-oxidase pos

extensive burns

24
Q

escherichia coli

A

gram neg rods
-fac anaerobes and lactose ferment pos
-part of normal microbiota but some strict pathogens

25
Q

salmonella spp

A

gram - rods fac anaerobe

typhi = strict human pathogen, only in humans, typhoid fever
non-typhoidal = strict human and in variety of animals, mild diarrhea

produec hydrogen sulfide

26
Q

shigella

A

gram - rods fac anaerobe
-intracell pathoden, strict, humans only

diarrhea > dysentery

27
Q

yersinia

A

gram - rods fac anaerobe
-many animal reservoirs
-plague, bloody diahhrea,

28
Q

enterobacteriaceae

A
  1. klebsiella pneumoniae
  2. proteus mirabilis- UTIs
29
Q

rare infections from hospitals

A
  1. enterobacter aerogenes
  2. serratia marcescens
30
Q

vibrio

A

curved rods, gram -

grow in alkaline pH, marine water so salt tolerant

31
Q

vibrio relevant species

A
  1. V. cholerae
  2. V. vulnificus
  3. V. parahaemolyticus
32
Q

camphylobacter jejuni

A

animal reservoirs

33
Q

helicobacter pylori

A

gram neg curved rods microaerophilic

colonization in stomach

34
Q

coccobacilli

A

gram neg, oval shape

35
Q

haemophilus influenzae

A

capsule/typed strains

nontypeable/no capsule

36
Q

P. multocida

A

abscess formation in animal bites

37
Q

brucella spp

A
  1. abortus
  2. melitensis
  3. suis

intracellular pathogens

spontaenous abortions

38
Q

francisella tularensis

A

aerobic

39
Q

bordetella pertussis

A

restricted to humans, strict patho

whooping cough

40
Q

mycobacterium

A

not gram staining

M. avium complex
M. leprae

41
Q

M. leprae

A

animal

42
Q

mycoplasma pneumoniae

A
43
Q

legionella pneumophilia

A
44
Q

spirochetes

A
  1. borrelia
  2. leptospira interrogans
  3. treponema palladium

Block 3 Found Sci (60 decks)

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