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Immune system

QuestionAnswer
Which substance added to vaccines enhances the immune response adjuvant
Describe one way a virus is altered when added to a vaccine dead/weakened/diluted/only part of virus
Name a factor that influences herd immunity 1. effectiveness of vaccine 2. population density 3. type of disease
State one problem with vaccine programmes 1. poverty 2. vaccine rejections
Explain why the flu virus poses a health risk. High antigenic variation
Explain how high antigenic variation is overcome with flu/influenza At risk individuals vaccinated yearly
Explain the importance of herd immunity protects non vaccinated individuals by reducing spread
State one reason why individuals would not be vaccinated allergic OR immunocompromised OR vaccine rejection
State the name of a programme that ensures a population becomes immunised against a specific pathogen Mass vaccination programme
Name the two components of a vaccine programme pathogen & adjuvant
State the name for the percentage of individuals who need to be immunised in order to slow spread of disease to protect vunerable, Herd immunity
State one reason why clinical trials are used to test drugs/vaccines before they are licensed. 1. effectiveness 2. safety
State the two features of clinical trials that reduces bias Randomisation of groups & Double blind
State the feature of clinical trials that allows for a validity comparison improving validity placebo
Describe a placebo drug Exact same set up but no active ingredient in drug
Describe what is meant by a double blind trial. Neither researchers or subjects know whether they are in the placebo or drug group
Which feature of experimental design reduce the magnitude of experimental error. Large sample size
Explain the importance of error bars when working out if data is significant. When error bars overlap between groups results are not significant.
Created by: brightminds
 

 



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