what is vaccine? how does it work?
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The parts of the vaccine made from viruses or bacteria (also called 'antigens'). They challenge the immune system so that it makes antibodies to fight the disease. Vaccines contain tiny quantities of active ingredients – just a few micrograms (millionths of a gram) per vaccine.
HOW DOES IT WORK ?????
The diseases vaccines prevent can be dangerous, or even deadly. Vaccines reduce your child's risk of infection by working with their body's natural defenses to help them safely develop immunity to disease. When germs, such as bacteria or viruses, invade the body, they attack and multiply.
HOW DOES IT WORK ?????
The diseases vaccines prevent can be dangerous, or even deadly. Vaccines reduce your child's risk of infection by working with their body's natural defenses to help them safely develop immunity to disease. When germs, such as bacteria or viruses, invade the body, they attack and multiply.
stylisharpita:
8th class
i m also in 8th
in which state you live
??
chan
Chandigarh
Ooo..
hmmm
i m from Delhi
ok
Answered by
1
Answer:
A vaccine is a type of medicine that trains the body’s immune system so that it can fight a disease it has not come into contact with before. Vaccines are designed to prevent disease, rather than treat a disease once you have caught it.
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