vaccines Flashcards
1
Q
whats herd immunity
A
alot of people are immune no where for pathogens to spread
2
Q
what are in vaccines
A
weak and inactive pathogens
3
Q
what is an pathogen
A
microoorangism that can cause diease
4
Q
where does asprin come from
A
willow
5
Q
where does digitalisis come from
A
fox glove
6
Q
define effficay dosage and toxicty
A
how well the drug works
how much of the drug to give
how harmful the drug is
7
Q
4 stages of drug testing
A
stage 1 - tested on cells
stage 2 - animals
stage 3 give to humans
stage 4 - reviewed by other scientist
8
Q
explain stage 3 in detail
A
give to health humans at a low dose to find maxium dosage
give to sick volunteers to find optium dosage
then do a trial with lots of people with some placebos and normal
9
Q
A
