What is Vaccine? Describe the importance of Vaccination.
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A vaccine activates our immune system without making us sick. Many dangerous infectious diseases can be prevented in this simple and effective way. From birth, we are constantly exposed to many different viruses, bacteria and other microbes. Most are not harmful, many are beneficial but some can cause disease.
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Answer:
A vaccine activates our immune system without making us sick. Many dangerous infectious diseases can be prevented in this simple and effective way. From birth, we are constantly exposed to many different viruses, bacteria and other microbes. Most are not harmful, many are beneficial but some can cause disease.
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