SECOND PRIORITY (3)

Question 1

surra is transmitted by hematophagous flies called:

Answer 1

stomoxys and tabanus

Question 2

CA of surra

Answer 2

t. evansi, congolense, brucei, vivax

Question 3

trypanosomiasis pathogenesis

__ into skin via insect bite
↓
Localized swellings
↓
Infect __
↓
Rapid division in the bloodstream
↓
____– attach to endothelial cells
_____ - invade tissues and
cause damage

Answer 3

Tryopanosomes into skin via insect bite
↓
Localized swellings
↓
Infect LN
↓
Rapid division in the bloodstream
↓
*T. congolense – attach to endothelial cells
*T. brucei and T. vivax - invade tissues and
cause damage

Question 4

T. evansi infections of cattle and buffalo usually
lead to pronounced

Answer 4

immunosuppression

Question 5

ausative agent of leptospirosis

Answer 5

l. interrogans

Question 6

earned its name from a characteristic hooked appearance that resembles a question mark

Answer 6

leptospirosis

Question 7

t/f all serovars of Leptospira are pathogenic, and many are associated with a reservoir species in which little disease is apparent.

Answer 7

f

Question 8

many serovars are highly prevalent within maintenance host populations and persist in the ___ and ___

Answer 8

kidneys or genital tract.

Question 9

high antibody responses and low tissue burdens are typical in these animals. with lepto

Answer 9

low abs

Question 10

leptospira is resistant to dessication T/F

Answer 10

freezing, dehydration, and UV radiation inactivate leptospires

Question 11

majority of leptospira serovars have specific maintenance hosts

Answer 11

t

Question 12

Leptospira serovars known to cause disease in mammals have been isolated from __

Answer 12

amphibians

Question 13

3rd most impt dx in indonesia

Answer 13

surra

Question 14

dz that can be inoculated in mice for lab dx

Answer 14

surra

Question 15

pH preference of leptospira

Answer 15

neutral to slight alkalaine

Question 16

all are serovars of canids except

a. bratislava
b. canicola
c. icterohemorrhagiae
d. pomona
e. hardjo
f. grippotyphosa

Answer 16

none

Question 17

lepto can be transmitted venerally or tranplacentally

Answer 17

t. but not all serovars

Question 18

encourages persistence of lepto in the environment.

Answer 18

rainfall

Question 19

Maintenance hosts typically do not develop significant clinical disease

Answer 19

tr

Question 20

develops rapidly and is a significant contributor to mortality in lepto infected animals

Answer 20

Acute renal injury

Question 21

hosts that develop reproductive disease acutely (lepto)

Answer 21

incidental hosts

Question 22

incidental hosts for lepto remain subclinical for weeks to months t.f

Answer 22

f. maintenance

Question 23

Best available method to determine infecting serovar of lepto

Answer 23

bacterial culture

Question 24

Does not provide serovar-specific results

Answer 24

PCR

Question 25

standard serological test for diagnosing leptospirosis,

Answer 25

MAT

Question 26

In experienced hands, the _ of leptospires is one of the most specific methods of demonstrating their presence,

Answer 26

isolation

Question 27

agar used for culure of lepto

Answer 27

Bismuth sulphite agar

Question 28

Addition of 0.4–5% ___ to semisolid culture medium enhances the chances of isolating fastidious leptospiral serovars

Answer 28

rabbit serum

Question 29

less fastidious serovars of lepto

Answer 29

Pomona and Grippotyphosa

Question 30

are increasingly used for the detection of leptospires in tissues and body fluids of animals because of their perceived sensitivity and capacity to give an early diagnosis.

Answer 30

PCR

Question 31

Subsequent differentiation to the serovar level was traditionally by __, although for most isolates this is now being done using less time-consuming methods such as monoclonal antibodies (MAbs).

Answer 31

cross-agglutination absorption

Question 32

is the laboratory procedure most frequently used to confirm the clinical diagnosis, to determine herd prevalence, and to conduct epidemiological studies

Answer 32

serology testing

Question 33

uses live antigens is the most widely used serological test

Answer 33

MAT