What is a vaccine? How does it work
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Vaccine is dose of weakened microbes given to the human body to built up the immune strength .
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A preparation consisting of weakened can germs or dead germ substances is called a vaccine.
on injecting them into body person gets disease in mild form and his body is stimulated to produce antitoxins. the antitoxins provide immunity against any future attack by particular disease germ.
hope this answer is sufficient and helpful to you dear....
on injecting them into body person gets disease in mild form and his body is stimulated to produce antitoxins. the antitoxins provide immunity against any future attack by particular disease germ.
hope this answer is sufficient and helpful to you dear....
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