Otthomyxo/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

Antigenic shift is behind the influenza pandemics

Answer 9

T

Question 10

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

Answer 10

T

Question 11

The influenza viruses cause respiratory signs in sea mammals

Answer 11

T

Question 12

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

Answer 12

T

Question 13

In humans inactivated vaccines are used for the immunisation against influenza

Answer 13

T

Question 14

Antigenic drift is behind the seasonal influenza epidemics

Answer 14

T

Question 15

Antigenic shift means the reassortment of the influenzavirus genome

Answer 15

T

Question 16

Influenzaviruses are sensitive to drying out
The high virulence of some influenza A viruses is the result of mutations in the HA gene

Answer 16

T

Question 17

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

Answer 17

T

Question 18

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

Answer 18

T

Question 19

Dogs are susceptible to horse origin influenza strains

Answer 19

T

Question 20

The HPAI strains can cause CNS Signs

Answer 20

T

Question 21

HPAI causes blood vessel damages and generalised infections

Answer 21

T

Question 22

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

Answer 22

T

Question 23

The LPAI causes immunosuppression

Answer 23

T

Question 24

HPAI strains are mutations of LPAI strains

Answer 24

T

Question 25

Swine recovered from influenza should not be kept for breeding

Answer 25

T

Question 26

Influenza causes high morbidity but low mortality in swine

Answer 26

T

Question 27

Swine influenza causes high morbidity rate

Answer 27

T

Question 28

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

Answer 28

T

Question 29

To prevent complications of swine influenza, antibiotics used.

Answer 29

T

Question 30

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

Answer 30

T

Question 31

The eggs produced in LPAI infected flock can be hatched

Answer 31

T

Question 32

The HPAI strains can cause clinical signs in waterfowl

Answer 32

T

Question 33

In poultry farms LPAI may be endemic without clinical signs

Answer 33

T

Question 34

Waterfowl can carry the influenza viruses for long time

Answer 34

T

Question 35

Avian influenza is zoonotic

Answer 35

T

Question 36

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

Answer 36

T

Question 37

In birds all influenza variants can be detected

Answer 37

T

Question 38

Avian influenza of high economic impact is caused by HPAI strains

Answer 38

T

Question 39

Avian influenza spread by bronchial discharge

Answer 39

T