Erysipelothyrx

Question 1

what species is it more prominent in

Answer 1

swine

Question 2

medically most important

Answer 2

E rhusiopathiae

Question 3

infects tonsils first

Answer 3

E tonsillarum

Question 4

gram, shape, respiration, catalase, oxidase, motility, spore, virulence

Answer 4

-gram positive
-long filamentous rod
-facultative anaerobe
-catalase negative
-oxidase negative
-non motile
-non spore forming
-few virulence factors

Question 5

serotypes of E rhusiopathaie that casue swine erysipelas

Answer 5

1a
1b
2

Question 6

culture media for growth

Answer 6

-blood agar – alpha hemolytic
-heart infusion supplemented with sodium azide and crystal violet
-nutrient broth and 1% glucose
-triple sugar iron
-requires enriched media
-hydrogen sulfide

Question 7

smell??

Answer 7

fart smell

Question 8

habitat

Answer 8

-tonsils
-lymphoid tissue of intestinal tract in carrier animals
-slurry of cattle hers
-sewages from abattoirs

Question 9

host range

Answer 9

-diverse

Question 10

transmission

Answer 10

-entry – oral, transmission by flies
-exit – feces, urine, saliva, nasal secretions

Question 11

virulence factors

Answer 11

only surface structures and enzymes, no toxins

Question 12

surface structures – capsule

Answer 12

-lipopolysaccharide, slime, glycocalyx
-ressitance to phagocytosis

Question 13

surface strcutres – surface protective proteins (spA, B, and C antigens)

Answer 13

-biofilm formation
-adhesion
-elicit immune response
-can be used as protective vaccine

Question 14

enzymes – neuraminidae (sialidase)

Answer 14

-attachment, invasion, destroy blood vessels (hemorrhage and thrombosis)

Question 15

enzymes – hyaluronidase

Answer 15

-spreading via destroying hyaluronic acid and polysaccharides between adjacent cells

Question 16

enzymes – superoxide dismutase

Answer 16

-protection from intracellular killing by macropahges
-detoxify free radicals

Question 17

pigs

Answer 17

diamond skin disease
rhomboid urticarial skin lesions

Question 18

turkeys

Answer 18

swollen snood
acute turkey erysipelas

Question 19

humans

Answer 19

erysipeloid
purplish, swollen, hard, painful rash
fish handlers
pig and poultry farmers
abattoir workers
veterinarians

Question 20

skin problems – dissemination

Answer 20

endocarditis
pneumonia
meningitis
osteomyleitis
arthritis
aboriton

Question 21

cardiovascular form

Answer 21

-cyanotic extremities
-purplish balck discoloration of abdomen
-septicemia, emboli, infartc, vegetative endocarditis in pigs

Question 22

joint form

Answer 22

polyarthritis
elbow, hip, hock, stifle, knee

Question 23

uterine form

Answer 23

-abortion due to fever
-bacteria isolated from fetuses
-can pass placental layers

Question 24

lacy skin diseasse

Answer 24

-not pus forming bacteria
-diamond shaped skin lesions in pigs
-swollen snood in turkeys

Question 25

treatment

Answer 25

-penicillin, ampicillin, ceftiofur

Question 26

control

Answer 26

-vaccinate pigs less than 3m with formalin killed vaccines
-remove sick animals form herd
-good hygiene and biosecurity
-wellbeing and good hygiene

Question 27

any toxins as virulence factors

Answer 27

no

Question 28

target body sites

Answer 28

skin
joints
lungs
heart