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A vaccine is made of attenuated, dead or non¬virulent micro-organism that stimulate cells in the immune system to recognise and attack disease causing agent through production of antibodies.importance of vaccination against diseases such as tuberculosis, poliomyelitis, measles, diphtheria, whooping cough are:-

1. Vaccination protects individuals from infections of many diseases like smallpox, tuberculosis and poliomyelitis. Diseases like smallpox, tuberculosis and tetanus were killer diseases but this is no longer the case.

2. Diphtheria Pertussis Tetanus (DPT) vaccine protects children against diphtheria, whooping cough and tetanus.

3. Bacille Calmette Guerin (BCG) vaccine is injected at birth to children to protect them against tuberculosis.

4. Measles used to be a killer disease but today, a vaccine injected into children at the age of rune months prevents it. At birth children are given an inoculation through the mouth of the poliomyelitis vaccine.

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