Question

explain the principal of vaccination​

Answer 1

Answer:

Vaccines contain antigens that stimulate the immune system to produce an immune response that is often similar to that produced by the natural infection. With vaccination, however, the recipient is not subjected to the disease and its potential complications.....

Explanation:

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Answer 2

Answer:

i)vaccine have antigents which stimulate the immune system

ii)and it reduce the mortality of infectious disease

iii)and it mimicking or stopping infectious pathogens from entering to our body.

Explanation:

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