
National Vaccination Day
National Vaccination Day also known as National Immunization Day is celebrated every year on 16th March, on this very day in 1995 the first dose of Oral Polio Vaccine was administered in India for
National Vaccination Day also known as National Immunization Day is celebrated every year on 16th March, on this very day in 1995 the first dose of Oral Polio Vaccine was administered in India for
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