Active Immunisation Flashcards
Strains used in marker vaccines can be differentiated from the field strains.
T
Avirulent strains can be used in live vaccines
T
The health state of the vaccinated animals can influence the efficacy of the vaccination
T
Adjuvants in vaccines increase the shelf life of vaccines
F
Inactivated vaccines contain inactivated bacterial toxins
T
The method of vaccination has no effect on the efficacy of the vaccination
F
Adjuvants in vaccines increase the efficacy of vaccines.
T
Attenuated strains can be used in live vaccines.
T
Deletion vaccines can only be used as live vaccines.
F
In the case of marker vaccines, the field strains and the vaccine strains can be
differentiated
T
Inactivated vaccines can contain the whole agents or their components
T
The colostral immunoglobulins have no effect on the vaccination of the new born
animals
F
DIVA principle can only be used if the animals are vaccinated with deletion vaccines
F
According to DIVA principle, infected and vaccinated animals can be differentiated.
T
Subunit vaccines contain only antigens of the agents
T
Certain parts of the genome are missing from deletion vaccine strains
T
Some genes are missing from the strains included in deletion vaccines
T
For safety reasons only inactivated vaccines are used
F
Live vaccines can contain strains with lower virulence
T
Live vaccines always contain avirulent agents
F
Live vaccines can contain attenuated strains
T
Live vaccines are less effective than the inactivated ones.
F
Live vaccines are dangerous, they are not on the market any more
F
Live vaccines are not used in Europe any more.
F