Reovirus

Question 1

Orbiviruses spread by droplet (aerosol) infection

Answer 1

F

Question 2

Orbiviruses can be cultivated in vivo by inoculation of embryonated eggs

Answer 2

T

Question 3

Genetic reassortments may cause significant antigenic changes in reovirus strains

Answer 3

T

Question 4

Orbiviruses are serologically uniform

Answer 4

F

Question 5

Orbiviruses are mainly arboviruses

Answer 5

T

Question 6

Reoviruses are sensitive to lipid solvents and detergents

Answer 6

F

Question 7

Orthoreoviruses frequently cause tenosynovitis of horses

Answer 7

F

Question 8

Orthoreoviruses can cause pneumoenteritis in calves

Answer 8

T

Question 9

Orthoreoviruses can cause pneumoenteritis in cattle

Answer 9

T

Question 10

Avian orthoreo –and rotaviruses can cause runting sunting syndrome in chickens

Answer 10

T

Question 11

Avian orthoreoviruses cause mainly nephritis and encephalitis

Answer 11

F

Question 12

Infection of adult birds with orthoreoviruses usually remains subclinical

Answer 12

T

Question 13

Avian orthoreoviruses usually transmitted by germinative route

Answer 13

T

Question 14

Avian orthoreoviruses can cause damages in the bursa Fabricii

Answer 14

T

Question 15

Mammalian orthoreoviruses can cause pneumoenteritis only in suckling animals

Answer 15

F

Question 16

Orthoreovirus can cause tenosynovitis in pigs

Answer 16

F

Question 17

Avian orthoreoviruses usually cause disease in adult birds

Answer 17

F

Question 18

Tenosynovitis is one of the most frequent manifestations of avian orthoreovirus infections

Answer 18

T

Question 19

Trypsin-sensititive avian orthoreovirus usually cause respiratory disease in birds

Answer 19

T

Question 20

Yolk immunity does not influence the efficacy of vaccination against avian orthoreovirus

Answer 20

F

Question 21

Avian orthoreoviruses may cause necrotic foci in the visceral organs of birds

Answer 21

T

Question 22

Avian orthoreoviruses can cause inapparent infection in poultry

Answer 22

T

Question 23

Orthoreoviruses can be detected by haemagglutination test

Answer 23

T

Question 24

Trypsin resistant strains of Avian orthoreoviruses frequently cause diarrhoea

Answer 24

T

Question 25

Trypsin sensitive strains of avian orthoreoviruses frequently cause tenosynovitis

Answer 25

T

Question 26

Horses usually develop lethal hemorrhagic enteritis in Orthoreovirus infections

Answer 26

F

Question 27

Infection of adult birds with Orthoreoviruses usually remains subclinical

Answer 27

T

Question 28

Orthoreoviruses can cause encephalitis in cattle

Answer 28

F

Question 29

Avian orthoreoviruses can cause inapparent infections in poultry

Answer 29

T

Question 30

Avian orthoreoviruses can cause poult enteritis-mortality syndrome (PEMS)

Answer 30

T

Question 31

Infectious tenosynovitis can be prevented by vaccination

Answer 31

T

Question 32

Avian orthoreoviruses infect only via inhalation and parenterally

Answer 32

F

Question 33

Avian orthoreoviruses only infect via PO infections

Answer 33

F

Question 34

All Avian orthoreoviruses can spread germinatively

Answer 34

T

Question 35

Helicopter disease causes feather problems

Answer 35

T

Question 36

Orthoreovirus infections cause immunosuppression in birds

Answer 36

T

Question 37

Tenosynovitis is a frequent sign of Avian Orthoreovirus infection

Answer 37

T

Question 38

Orthoreovirus mainly infects younger animals

Answer 38

T

Question 39

Orthoreovirus causes respiratory and GI disease

Answer 39

T

Question 40

Tenosynovitis is caused by only one Orthoreovirus

Answer 40

F

Question 41

Orthoreoviruses frequently cause tenosynovitis of horses

Answer 41

F

Question 42

Rotaviruses are sensitive to environmental conditions

Answer 42

F

Question 43

Rotavirus infection is sporadic within the herd

Answer 43

F

Question 44

Rotavirus only infects mammals

Answer 44

F

Question 45

Clinical signs of rotavirus infection are usually seen in animals older than 2 weeks of age

Answer 45

F

Question 46

Swine is not susceptible to rotavirus infection

Answer 46

F

Question 47

Rotaviruses predispose to E.Coli infection in suckling piglets

Answer 47

T

Question 48

Rotaviruses are shed in the faeces in high titres

Answer 48

T

Question 49

Rotavirus infection results in high mortality

Answer 49

F

Question 50

Avian rotaviruses are transmitted by germinative infection

Answer 50

F

Question 51

Losses due to rotavirus infection of young animals can be prevented by colostrum feeding

Answer 51

T

Question 52

Rotaviruses usually cause enteritis in young (1-2 weeks old) animals

Answer 52

T

Question 53

Clinical signs of rotavirus infection are usually seen in animals older than 2 weeks of age

Answer 53

F

Question 54

Rotaviruses damage the mucosa of the large intestines

Answer 54

F

Question 55

Rotaviruses are serologically uniform

Answer 55

F

Question 56

Rotaviruses are typically transmitted via the faecal oral route

Answer 56

T

Question 57

Swine rotavirus infection is frequently followed by E. coli secondary infection in piglets

Answer 57

T

Question 58

Avian rotaviruses can cause tenosynovitis

Answer 58

F

Question 59

Rotaviral enteritis of calves can be prevented by immunization of pregnant cows

Answer 59

T

Question 60

Rotaviruses can cause chronic enteritis and persistent infection

Answer 60

F

Question 61

Rotaviruses cause mainly respiratory signs in cattle

Answer 61

F

Question 62

Rotaviruses mainly cause respiratory disease in older animals

Answer 62

F

Question 63

Rotaviruses typically cause respiratory disease in 3-6 month old calves

Answer 63

F

Question 64

Rotavirus is species specific

Answer 64

F

Question 65

Rotaviruses frequently cause tenosynovitis in birds

Answer 65

F

Question 66

Vaccination of horses in the Americas is used to prevent rotavirus infections

Answer 66

T