CBSE Class 9 Answered
Why is vaccination considered as prevention of disease?
Asked by Subodh Panda | 23 Jan, 2014, 08:15: PM
Expert Answer
Vaccines are responsible for the control of many infectious diseases.Vaccines contain the same antigens or parts of antigens that cause diseases, but the antigens in vaccines are either killed or greatly weakened. Vaccine antigens are not strong enough to cause disease but they are strong enough to make the immune system produce antibodies against them.
Answered by Sivanand Patnaik | 24 Jan, 2014, 08:37: AM
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