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What are vaccines?

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A vaccine is a biological solution prepared by the live but weakened or killed pathogenic microorganism. These vaccines are the antigens or the antibodies and help to generate an immune response and protect the organism on second encounter of the same agent.
There are many vaccines which are used for providing immunisation and prevention of the infections and diseases.
  • OPV for preventing poliomyleitis.
  • Hepatitis vaccine for preventing Hepatitis B.

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