Answer A)
Vaccination is the phenomenon of giving vaccine so that a person develops immunity against some infections and diseases. A vaccine contains killed or a weakened pathogen so that the body generates memory cells against this pathogen in the future.
Answer B)
The scientist, Louis Pasteur, is known to develop the fist vaccine.
Answer C)
Kushal's viewpoint is correct. Every child should be vaccinated against certain pathogens whether he be a girl or a boy.
