BRUCELLOSIS Flashcards
other term for brucellosis
bang’s dz
agent of brucellosis
b. abortus in catt;e
b. melitensisn in sheep
b. ovis in sheep
strain of brucella not zoonotic
b. ovis
principle manifestation of brucella
Reproductive failure in males and females
where is brucella found
placenta
MOT of brucellosis
Horizontal
Ingestion
intact skin penetration
conjunctiva
udder contamination via milking
coitus / AI
Vertical
where do bacteria multuply in brucellosis
phagocytes
infected phagocytes invade what organs
spleen, LN, mammary gland, uterus
substance normally produced by the fetus stimulates growth of Brucella sp.
Erythritol
in pregnants brucella involves ulceration of the endometrium then ___
cotyledon and villi
presence of leathery plaques on the chorion’s
external surface
brucellosis
Hygromas on the knees , stifles, hock etc
Retained placenta
-Infertility
brucellosis
Differential diagnoses for brucellosis
-Trichomoniasis
-Listeriosis
-Leptospirosis
-Mycoses
-Nutritional problems
t.f Vaccination program that target cattle against
B. abortus have proved effective but trying to
control B. melitensis in sheep and goats is much
more difficult
t
brucella targets _____ in pregnant while ____ in non pregnant
Pregnant uterus, fetus, fetal membranes
Non pregnant: udder or mammary gland - source of infection
manifestation of brucella in humans
undulant fever
t/f Risk is lower if the semen is used in AI vs embryo transfer
f. higher
Those who recovered from. brucella can still breed but are considered __ of the dz
reservoirs
charac of b. abortus
Gram -, coccobacilli
serological technique for brucella
Rose bengal test: large scale screening of sera from buffaloes/carabaos
Principle: serum has Ab against brucella = agglutination
t.f tx are successful inability to penetrate cells since intracellular
f unsuccessful
quarantine length for brucella +
120 days to 1 yr unless there’s a way of testing animals
source of infection of b. ovis in nz and aus
infected ram
how is brucella transmitted between rams
Passive venereal infection
—-> Ram mated with female → another ram mated with that female → infection from ram is passed via female reproductive tract
Occurs in breeding season
—-> Direct ram-to-ram transfer (if not during breeding season)
Sniffing of prepuce
tx for b. ovis
oxytet
Dihydrostreptomycin sulfate
Culling of rams in small commercial flocks
Scrotal palpation
Cull those with orchitis
Vaccination
B melitensis strain rev 1
manifestation of b melitensis in humans
mediterranean fever or malta
b. melitensis mode of infection
Via milk and reproductive tract
re highly susceptible in b.melitensis
goat and sheep
brucella strain that is High risk of bioterrorism/agroterrorism
b. melitensis
