Which of the following is true about vaccine
It causes severe disease
It leads to mild symptoms
It contains powerful causative antigen
It can be prepared easily for a virus
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Vaccination is the process of administration of the vaccine (antigenic material) into the body in order to stimulate the immune system and produce antibodies against specific antigens. It helps to attain resistance to a specific disease. A vaccine is an inactivated or heat-killed disease-causing microorganism. It involves the use of a weakened or harmless version of the pathogen. However, there are many diseases like malaria, dengue fever, AIDS which are not controlled by vaccination.
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