why vaccines are given to a healthy person? give reasons.
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to not get any diseases it is a precaution
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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.
The body's immune system helps protect us against infections. When we are exposed to infection, the immune system triggers a series of responses to neutralise the microbes and limit their harmful effects. Exposure to an infectious disease often gives lifelong protection (immunity) so we do not contract the same disease again. Our immune system “remembers” the microbe.
Simple and effective protection
We often develop lifelong immunity when we have had a disease. However, some diseases may lead to serious complications and sometimes death. The aim of vaccination is to obtain this immunity without any of the risks of having the disease.
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.
The body's immune system helps protect us against infections. When we are exposed to infection, the immune system triggers a series of responses to neutralise the microbes and limit their harmful effects. Exposure to an infectious disease often gives lifelong protection (immunity) so we do not contract the same disease again. Our immune system “remembers” the microbe.
Simple and effective protection
We often develop lifelong immunity when we have had a disease. However, some diseases may lead to serious complications and sometimes death. The aim of vaccination is to obtain this immunity without any of the risks of having the disease.
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