Major Pathogens + Characteristics

Question 1

Staph Aureus

Answer 1

GPC; grape like clusters; beta hemolytic; catalase +; coagulase+; can be grown

Question 2

Strep Pyogenes

Answer 2

GPC; chains; catalase -; beta hemolytic; Group A Strep; can be grown

Question 3

Enterococcus

Answer 3

GPC; chains; very drug resistant; can be grown

Question 4

Neisseria meningitidis

Answer 4

GNC; capsulated; can receive vaccine; has LPS + endotoxin; requires CO2; can be grown

Question 5

Neisseria gonorrhoeae

Answer 5

GNC; no vaccine; has LPS + endotoxin; requires CO2; can be grown

Question 6

Listeria Monocytogenes

Answer 6

GPR; aerobic; teichoic acid in CW; can cross placenta; can be grown (in refrigerated temps)

Question 7

Corynebacterium Diptheriae

Answer 7

GPR; aerobic; usually respiratory infections; toxigenic disease; teichoic acid in CW; can be grown

Question 8

Bacillus anthracis

Answer 8

GPR; sporeforming; teicoic acid in CW; biohazard; can be grown but isnt

Question 9

Escherichia coli

Answer 9

GNR; facultative intracellular; part of normal flora; can be grown

Question 10

Salmonella enterica

Answer 10

GNR; facultative intracellular; live in vacuole; can be grown

Question 11

Shigella dysenteriae

Answer 11

GNR; facultative intracellular; escapes vacuole; actin motility: can be grown

Question 12

Other Enterobacteriaceae

Answer 12

Yersinia, Aeromonas, Klebsiella; GNR; LPS + Endotoxin; facultative intracellular; can be grown

Question 13

Bordetella pertussis

Answer 13

requires special growth medium; GNCB; can be grown

Question 14

Pseudomonas

Answer 14

very antibiotic resistance; non fermentative; opporunistic pathogen; GNR; can be grown

Question 15

Vibrio

Answer 15

cholerae, vulnificus, parahemolyticus; GN curved rods; marine bacteria; can be grown

Question 16

Haemophilus

Answer 16

GNCB; person-person contact; need specific growth factors to grow (X (heme) and V (NAD) factor)

Question 17

Campylobacter

Answer 17

GN spiral shaped; requires special growth media

Question 18

Mycobacterium tuberculosis

Answer 18

AF; contains mycolic acid in CW; slow growing

Question 19

mycobacterium leprae

Answer 19

AF; contain mycolic acid in CW; not grown in lab

Question 20

Rickettsia

Answer 20

GNR; obligate intracellular pathogen; grows in cytoplasm; arthropod vector; cant be grown in lab

Question 21

Chalmydia

Answer 21

GN; obligate intracellular; grows in vacuoles; transmitted via direct contact; can’t be grown in lab

Question 22

Coxiella

Answer 22

GN; grows in acidified phagolysosome; airborne/inhalation; obligate intracellular; can’t be grown in lab

Question 23

Bacteroides

Answer 23

GNR anaerobe

Question 24

Clostridium botulinum

Answer 24

GPR; anaerobe; spore former; causes toxigenic disease

Question 25

Clostridium tetani

Answer 25

GPR; anaerobe; spore former; toxigenic disease

Question 26

Clostridium perfringens

Answer 26

GPR; anaerobe; spore former

Question 27

Clostridium difficile

Answer 27

GPR; anaerobe; spore former

Question 28

Treponema pallidum

Answer 28

Spirochete; don't grow in lab; don't gram stain; extracellular pathogen; syphilis (STD)- Chancre (painless), lesions all over body (including palms/soles), gumma lesion (painless)

Question 29

Leptospira interrogans

Answer 29

spirochete; doesn't grow in lab; no gram stain; extracellular pathogen; transmitted from animals/urine

Question 30

Borrelia burgdorferi

Answer 30

spirochete; doesn't grow in lab; no gram stain; extracellular; lyme disease (tick vector)

Question 31

Mycoplasma

Answer 31

no gram stain (no peptidoglycan); can grow in lab but typical diagnostic labs; membrane has sterols; extracellular pathogen

Question 32

Enterotoxigenic Strains (ETEC)

Answer 32

E coli that causes watery diarrhea (fecal/oral)

Question 33

Enterohemorrhagic Strain (EHEC)

Answer 33

bloody diarrhea, pedestals, shiga toxin; Hemolytic Uremic Syndrome (Acute renal failure)

Question 34

Extraintestinal strains ExPEC

Answer 34

uropathogenic E. Coli- UTI P-type pili | Meningitis Strains - K1 polysaccharide capsule