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Flashcards in Chapter 24 Deck (8)
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1

What are forms of pathogens found in vaccines?

Dead
Parts
Weakened
Inactivated bacterial toxin

2

What are in vaccines?

Pathogen mixed with an adjuvant

3

What is an adjuvant?

A chemical substances that promotes the activity of the antigens present on the surface if the pathogen and enhances the immune response

4

What are key aspects of phase 3 in clinical trials?

Two groups; control and test
Placebo controlled, double blind , randomised

5

What is herd immunity?

Most of the pop have been immunised the probability of the few remaining non immune ppl getting the disease becomes very low, they are protected

6

What does an herd immunity threshold depend on?

Pathogens virulence
Vaccines efficacy
Contact parameters

7

What is antigenic variation?

New strains of a pathogen surface antigens are different from those of their parent strain

8

What is active immunity?

The protection gained as a result of the persons own body producing its own antibodies