influenza

Question 1

Influenzaviruses have segmented genome

Answer 1

T

Question 2

HPAI and LPAI strains differ in the number of basal amino acids in the HA protein

Answer 2

T

Question 3

HA protein of influenza viruses is responsible for the attachment to the cell

Answer 3

T

Question 4

The M2 protein of influenza viruses serves as an ion channel important in the decapsidation

Answer 4

T

Question 5

Antigenic drift means serials of point mutations in the HA and NA genes

Answer 5

T

Question 6

The NA protein in the influenza virus is responsible for the release from the infected cells

Answer 6

T

Question 7

Enzymatic cleavage of the HA protein is needed for the influenza virus penetration into the cell

Answer 7

T

Question 8

Genetic reassortment of human and animal influenza viruses result in the occurrence of new human influenza strains

Answer 8

T

Question 9

Bats have an important role in the epidemiology of influenza

Answer 9

F

Question 10

Antigenic shift is behind the influenza pandemics

Answer 10

T

Question 11

Influenza viruses are classified into genera by their HA and NA proteins

Answer 11

F

Question 12

Influenza causes persistent infection in donkey

Answer 12

F

Question 13

The serotype of influenza viruses is determined by their HA and NA proteins

Answer 13

T

Question 14

The influenza viruses cause respiratory signs in sea mammals

Answer 14

T

Question 15

The host range of influenza virus is determined by the NA protein

Answer 15

F

Question 16

The bird to human host switch of influenza virus is mediated by swine

Answer 16

T

Question 17

The main host of influenza is the swine

Answer 17

F

Question 18

In humans inactivated vaccines are used for the immunisation against influenza

Answer 18

T

Question 19

Antigenic drift is behind the seasonal influenza epidemics

Answer 19

T

Question 20

Antigenic shift means the reassortment of the influenzavirus genome segments

Answer 20

T

Question 21

Influenzaviruses are sensitive to drying out

Answer 21

T

Question 22

For the in vitro propagation of influenza viruses embryonated eggs is used

Answer 22

T

Question 23

The high virulence of some influenza A viruses is the result of mutations in the HA gene

Answer 23

T

Question 24

Dogs are susceptible to horse origin influenza strains

Answer 24

T

Question 25

The HPAI strains can cause CNS Signs

Answer 25

T

Question 26

HPAI causes blood vessel damages and generalised infections

Answer 26

T

Question 27

The HPAI strains are usually developed from the H5 and H7 influenza viruses

Answer 27

T

Question 28

The LPAI causes immunosuppression

Answer 28

T

Question 29

Cat is susceptible to human seasonal influenza

Answer 29

F

Question 30

HPAI strains are mutations of LPAI strains

Answer 30

T

Question 31

HPAI strains belong into a certain haemagglutinin types

Answer 31

F

Question 32

Influenzas Causes enteric symptoms in human

Answer 32

F

Question 33

Anti-neuraminidase drugs inhibit the decapsidation of influenza viruses

Answer 33

F

Question 34

Swine recovered from influenza should not be kept for breeding

Answer 34

T

Question 35

Influenza causes high morbidity but low mortality in swine

Answer 35

T

Question 36

The HPAI causes skin haemorrhages in swine

Answer 36

F

Question 37

Swine influenza outbreaks occur usually during summer

Answer 37

F

Question 38

The mortality of swine influenza is high

Answer 38

F

Question 39

Swine influenza causes high morbidity rate

Answer 39

T

Question 40

To prevent complications of swine influenza penicillin injections are given to sick pigs

Answer 40

T

Question 41

Swine influenza is easily transmitted to people

Answer 41

F

Question 42

To prevent complications of swine influenza, antibiotics used

Answer 42

T

Question 43

In swine all influenza variants can be detected

Answer 43

F

Question 44

In a horse influenza outbreak all infected horses must be killed

Answer 44

F

Question 45

The generalized symptoms of horse influenza are result of the interferon response

Answer 45

T

Question 46

Racehorses should be vaccinated before the influenza season

Answer 46

F

Question 47

Breeding mares should be vaccinated before the influenza season

Answer 47

F

Question 48

Influenza causes persistent infection in horses

Answer 48

F

Question 49

The eggs produced in LPAI infected flock can be hatched

Answer 49

T

Question 50

The HPAI infection can be unambiguously differentiated from Newcastle disease by the clinical signs

Answer 50

F

Question 51

The HPAI strains can cause clinical signs in waterfowl

Answer 51

T

Question 52

In poultry farms LPAI may be endemic without clinical signs

Answer 52

T

Question 53

Waterfowl can carry the influenza viruses for long time

Answer 53

T

Question 54

Influenza viruses are shed by birds exclusively in the nasal discharge

Answer 54

F

Question 55

Avian influenza is zoonotic

Answer 55

T

Question 56

The virulence of avian influenza is determined by the i.v. pathogeny index and mortality

Answer 56

T

Question 57

Avian influenza can switch directly to human and cause epidemics with high case numbers as result of human to human transmission

Answer 57

F

Question 58

In birds all influenza variants can be detected

Answer 58

T

Question 59

Avian influenza of high economic impact is caused by HPAI strains

Answer 59

T

Question 60

Avian influenza virus is primarily spread through bronchial discharge and aerogenic route

Answer 60

F

Question 61

Avian influenza spread by bronchial discharge

Answer 61

T