OVERVIEW OF THE IMMUNE SYSTEM
LYMPHATIC AND IMMUNE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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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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Detailed explanation-1: -One difference is that certain types of vaccines only show the immune system part of the relevant virus. Because of that, the immune system doesn’t form as many different types of antibodies as it would in the course of a natural infection.
Detailed explanation-2: -Live virus vaccines use the weakened (attenuated) form of the virus. The measles, mumps, and rubella (MMR) vaccine and the varicella (chickenpox) vaccine are examples. Killed (inactivated) vaccines are made from a protein or other small pieces taken from a virus or bacteria.
Detailed explanation-3: -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-4: -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.