Vaccines typically contain particles that are pieces of the virus or bacteria they target. How do you think this helps you avoid getting sick in the future?
a) vaccine-preventable diseases are just part of life. it is better to have the disease than become immune through vaccines
b) vaccine programs fail to produce overall health benefits of a population by because they do not reduce the transmission od disease
c) the particles act as antibodies, against which the person's immune system will develop antibodies
d) the particles act as antigens, against which the person's immune system will develop antibodies
e) vaccines create an entirely new immune system
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