Vaccines: How They Work and Protect Us

The video explains vaccines as biological preparations containing weakened or inactive disease forms. It details how vaccines help the immune system recognize and fight diseases, leading to immunity. Examples like chickenpox and typhoid illustrate immunity and the need for repeated vaccinations. The importance of vaccinating children due to their developing immune systems is highlighted. Vaccines also contribute to herd immunity, protecting those who cannot be vaccinated and enhancing future generations' immunity.

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