Final answer:
Inactivated vaccines contain killed or inactivated pathogens to trigger an immune response without causing illness, while live attenuated vaccines use weakened live pathogens for a stronger immune reaction.
Explanation:
Inactivated vaccines contain whole pathogens that have been killed or inactivated to stimulate an immune response without causing the disease.
These vaccines are made by inactivating the pathogen with heat, chemicals, or radiation, while live attenuated vaccines contain weakened but live pathogens that induce a stronger immune response.
For inactivated vaccines to be effective, the inactivation process must not affect the structure of key antigens on the pathogen.
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