Cardiovascular system

Question 1

bacteria infections can manifest as

Answer 1

pericarditis/myocarditis

Question 2

Clostridium chauvoei

Answer 2

Black leg- musculoskeletal system
necrotic myositis
100% fatality
histotoxic clostridium

Question 3

Clostridium piliforme

Answer 3

Tyzzer's Disease
Gram (-)
lab animals and horses
acute fatal diarrhea disease, focal liver necrosis (bundles in hepatocytes)
usually seen post mortem

Question 4

Fusobacterium necrophorum

Answer 4

leukotoxin
foot rot (cattle)
laryngitis
diphtheria

Question 5

Trueperella pyogenes

Answer 5

Gram (+)

Question 6

Corynebacterium pseudotuberculosis

Answer 6

heart abscesses in sheep and goat

also causes pigeon fever in horses

Question 7

Histophilus somni

Answer 7

myocarditis, laryngitis, and effect repro system

Question 8

Traumatic reticulopericarditis caused by

Answer 8

multiple bacteria

Question 9

Shigatoxigenic E. coli

Answer 9

Edema disease in weaned pigs (VTEC)
Vero toxin/shiga toxin
disease of vasculature, subcutaneous edema
edema in eyelid, stomach submucosa, mesocolon
degenerative angiopathy affecting arteries and arterioles
necrosis of smooth muscle cells in tunica media

Question 10

Lymphadenitis

Answer 10

Caseous lumphadenitis- corynebacterium pseudotuburculosis

Strangles- steptococcus equi subsp. equi

Question 11

Lymphangitis

Answer 11

Pigeon fever A (c. pseudotuberculosis)
Sporothrix schenkii- cats, dogs, horses
Epizootic lymphangitis- Histoplasma farciminosum

Question 12

Where do Rickettsia bacteria colonize?

Answer 12

vascular endothelium (see hemorrhage)

Question 13

Typhus group of Rickettsia

Answer 13

R. prowazekii

R. typhi

Question 14

Spotted fever group Rickettsia

Answer 14

R. rickettsii

Question 15

Rickettsia felis

Answer 15

emerging zoonotic infection
reservoir- rats and mice
endemic cycle b/n opossums and domestic cats and infected fleas

Question 16

Which Rickettsia species has direct transmission (without vector)

Answer 16

Coxiella burnetii (bioweapon!)- Q fever

Question 17

What is the required intermediate host for Rickettsia transmission

Answer 17

Tick

Question 18

Rickettsia infection clinical signs

Answer 18

vascular endothelial damage, thrombocytopenia, development of petechiae and echymoses
necrosis of extremities (acryl gangrene) or disseminated intravascular coagulation in severe cases in dogs

Question 19

E. chaffeensis

Answer 19

human moncytic ehrlichiosis- humans, dogs

Question 20

E. ewingii

Answer 20

canine granulocytic ehrlichiosis- humans, dogs

Question 21

E. canis

Answer 21

canine monocytic ehrlichiosis- dogs, humans?

Question 22

E. ruminatium

Answer 22

endothelial granulocytes (ruminants)-african heartwater (not in USA)

Question 23

A. phagocytophilium

Answer 23

granulocytes

horses, ruminants, humans, dogs

Question 24

A. marginale, A. centrale

Answer 24

erythrocytes- ruminants

Question 25

A. platys

Answer 25

platelets- dogs

Question 26

Neorickettsia helminthoeca

Answer 26

salmon posioning disease

mononuclear cells, fluke vector

Question 27

Neorickettsia risticii

Answer 27

potomac horse fever
blood monocytes, tissue macrophages
(snail and trematode in life cycle)