GCSE Biology - What Are Vaccines? Are They Safe? How Do They Work? Vaccines Explained #39

The video explains how vaccines work by exposing the immune system to weakened or inactivated pathogens, allowing the body to develop immunity without causing disease. Vaccines protect individuals and communities by preventing the spread of diseases, contributing to herd immunity. While vaccines are generally safe and effective, they may not always provide full immunity and can occasionally cause mild side effects. The benefits of vaccination, such as controlling diseases and preventing epidemics, typically outweigh the risks.

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