Vaccination Question (1 Viewer)

[get_back23]

CSSA 2010 question 30

Basically, question says in NSW children are vaccinated for whooping cough bacterium, however despite the vaccination rate remaining high there has been a increase in incidence

a) Use udnerstanding of biology and eovlution to explain why incidnce increased
b) Justify why we should continue to support vaccination programs

For b), i used my answer for A, i.e. we need to devlop new vaccines periodically as the mutations of pathogens lead to a strain that cannot be prevented by 'out dated vaccines'

But then the answer talks about how vaccine programs are successful, and used small pox eradication as an example to justify for 'continued support of vaccination programs'

If the answer is right, then part a is misleading? lol

 

[madharris]

For b), i used my answer for A, i.e. we need to devlop new vaccines periodically as the mutations of pathogens lead to a strain that cannot be prevented by 'out dated vaccines'

part a: your answer is correct (depending how many marks the question is)
part b: saying the same thing doesn't justify anything. Their answer from what you've given me is correct

i don't understand how you would think part a is misleading... misleading how?

 

[Leffife]

Basically, question says in NSW children are vaccinated for whooping cough bacterium, however despite the vaccination rate remaining high there has been a increase in incidence
a) Use understanding of biology and evolution to explain why incidence increased
b) Justify why we should continue to support vaccination programs

For question (a), you are on the right track.
Basically, you have to tell that certain pathogens have some form of resistance to chemicals due to natural variation. The ability of the pathogen to survive by natural selection, and then mutate & pass on useful genes enables their kind to survive and multiply quickly. Etc....

For question (b), it's NOT the same thing.
Justify is another way of saying prove. Basically you need an example to show progress and why it's essential that vaccination programs must continue. In this kind of question, you have to include a little about how it's successful in general but you can talk about the influenza virus. Since the influenza virus always mutates rapidly. So that's why there are always new forms of vaccines to treat mainly the elderly people, as their immune system is much weaker. Etc...