Types
Vaccines are dead or inactivated organisms or purified products derived from them.
There are several types of vaccines in use. These represent different strategies used to try to reduce risk of illness, while retaining the ability to induce a beneficial immune response.
Read more about this topic: Vaccine
Famous quotes containing the word types:
“The bourgeoisie loves so-called positive types and novels with happy endings since they lull one into thinking that it is fine to simultaneously acquire capital and maintain ones innocence, to be a beast and still be happy.”
—Anton Pavlovich Chekhov (18601904)
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“He types his laboured columnweary drudge!
Senile fudge and solemn:
Spare, editor, to condemn
These dry leaves of his autumn.”
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