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What is the purpose of vaccination?

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After the provision of safe food, water and sanitation, the most important public health measure in the world is vaccination. Many infectious diseases, previously responsible for millions of deaths, are being controlled through vaccination. Some, such as smallpox, have now been eradicated. read more

Vaccination is one of the best ways parents can protect infants, children and teens from 16 potentially harmful diseases. Vaccine-preventable diseases can be very serious, may require hospitalization, or even be deadly – especially in infants and young children. read more

The purpose of vaccination is to produce immunity. Immunity means the presence in a person's body of cells and substances known as antibodies that can produce a protective immune response. The immune cells and antibodies attack viruses and bacteria or the toxins they produce, stopping them from multiplying and causing disease. read more

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