Under polio prevention programme, infants in India were given polio vaccines on a large scale at regular intervals to eradicate polio from the country.
Q. What is a vaccine? Explain how does it impart immunity to the child against
the disease.
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Vaccination is the process of introduction of weakened or inactivated pathogens or
proteins (vaccine) into a person to provide protection against a disease.
• Vaccination provides immunisation after a time gap.
• The vaccine generates memory B- and T-cells that recognise the pathogen on
subsequent exposure and produce an intense immune response.
hope it helps!!
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