Bovine Infectious Leukosis & Viral Calf Diarrhea

Question 1

what viral family does BIL belong to

Answer 1

retroviridae

Question 2

what type of virus is BIL

Answer 2

RNA
enveloped

Question 3

true or false:
most infections are asymptomatic and only recognized by serology

Answer 3

true

Question 4

of the infected cows, what will happen to 30% of them

Answer 4

develop persistent lymphocytosis with no clinical signs

Question 5

what is clinical presentation of an 4-8 year old animal with BIL

Answer 5

lymphoid tumors

Question 6

what is not observed in the blood even though dealing with BIL

Answer 6

malignant cells

Question 7

what test is used to diagnose BIL

Answer 7

antibody ELISA

Question 8

what are the most common viral families that cause viral diarrhea in calves

Answer 8

rotaviruses
coronaviruses

Question 9

what can be used to help narrow down the etiological agent

Answer 9

age of calf

Question 10

what type of virus is the rotavirus

Answer 10

RNA
segmented
naked

Question 11

how can transmission occur due to the naked nature of the calf

Answer 11

contact with infected feces

Question 12

what is the common clinical sign of diarrhea because of the rotavirus

Answer 12

whites scours / milk scours

Question 13

when are calves infected with the rotavirus version

Answer 13

first couple weeks post birth

Question 14

what does the rotavirus have a tropism for

Answer 14

enterocytes in the small intestine