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
Live vaccines do not provide good immunity.
F
Marker vaccines are used to mark the site of vaccination
F
It is not allowed to use inactivated deletion vaccines in the EU.
F
Live vaccines contain attenuated or avirulent agents.
T
The agent in a vaccine can influence the level of the immune response of vaccinated
animals
T
If deletion vaccines are used, vaccinated and infected animals can be differentiated.
F
Using marker vaccines, vaccinated and infected animals can be differentiated.
T
Use of marker vaccines can be combined with “test and remove” eradication.
T
The immune response produced by an attenuated vaccine is low
F
Marker vaccines are marked with dyes
F
Some attenuated vaccine strains can be immunosuppressive
T
Attenuated vaccines induced a quick immune response
T
Vaccines containing attenuated strains are not used anymore
F
The amount of antigen in the vaccine has no effect on the efficacy of the vaccine.
F
