Question

describe how vaccines work

Answer 1

vaccines are the weak suspension of microorganism or dead or decaying microorganisms which are generally used to provided resistance to an organism against any microorganism.simply we can say that, they prepare the body to fight disease without exposing it to disease symptoms
when undesirable organisms such as bacteria or organisms enter our body,immune cells called lymphocytes respond by producing antibiotics,which are protein molecule.these antibodies fight the undesirable organisms know as an antigen and protect against further infection.....

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Answer 2

when a vaccine is given containing weak and dead microorganisms our body produces anti bodies and stores them. when a disease causing micro organisms enter in our body , already present antibodies fight and eliminate them . and the disease is controlled 

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