ch 14 Flashcards
1
Q
what is a vaccine
A
preparation contains the antigenetic material that triggers the body’s immune system to produce specific Abs against the pathogen. Its a form of artificial active immunity. it is given by intravenous or intramuscular injection or orally
2
Q
the antigenic material may be any of
A
-dead micro-org
-live attenuated micro-org
-toxoid
3
Q
why vaccine has not eliminated “X”
A
-poor immune response due to malnutrition and protein deficiency
-antigenic variation that makes memory cells unable to recognize the shape of antigen
-antigen concealment where pathogen hide inside host cell out of reach of abs
-immigrants & refugees that act as new sources for transmission of the disease
-inability to take booster doses due to unrest
-no herd immunity
4
Q
A
