911. Kushal's family is happy as he became a proud father to a baby girl. Upon a
routine visit to the hospital, the doctor advised him not to skip the vaccination
schedule. While discussing the same at home, one of the family members suggested
that vaccination is not necessary for a girl child. Kushal opposed this suggestion.
(a) What is vaccination?
(b) Name the scientist who prepared the first vaccine?
(C) Critically comment upon Kushal's viewpoint.