BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How are the germs used in vaccines different from the germs that exist in nature?
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The germs used in vaccines can only make animals sick, not humans
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The germs used in vaccines are not real germs
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The germs used in vaccines mutate frequently
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The germs used in vaccines are weakened or altered
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Explanation:
Detailed explanation-1: -Use part of the bacteria Some bacteria cause disease by making a harmful protein called a toxin. Several vaccines are made by taking toxins and inactivating them with a chemical (the toxin, once inactivated, is called a toxoid). By inactivating the toxin, it no longer causes disease.
Detailed explanation-2: -Vaccines contain dead or weakened microbes of a particular disease. When a vaccine is introduced into a healthy body, the body fights and kills them by producing suitable antibodies. These antibodies remain in the body and protects it from the microbe when it invades the body again.
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