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2 : cells
chapter 5 : cell recognition and the immune system
5.6 vaccination
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Created by
Deryn Daley
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Cards (9)
immunity
is the ability of an organism to resist infection
passive
immunity is produced by the
introduction
of antibodies into individuals from an
outside
source
passive immunity:
direct contact with the pathogen
isn't
necessary
immunity is acquired
immediately
immunity
doesn't
last
active
immunity is produced by
stimulating
the production of antibodies by the individuals own
immune system
active immunity:
direct contact with the pathogen
is
necessary
immunity takes
time
to be acquired
immunity
does
last
two types of active immunity:
natural
active immunity
artificial
active immunity
natural active
immunity results from an individual becoming
infected
with a disease under
normal
circumstances and produces its own
antibodies
artificial active
immunity involves inducing an immune response without the individual suffering the symptoms of the disease
herd immunity arises with a sufficiently
large
proportion of the population has been vaccinated to make it
difficult
for a pathogen to spread