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.

What is the primary function of vaccines in relation to pathogens?

What are some common diseases that vaccines have helped to control?

How do vaccines help prevent epidemics?

Explain how herd immunity contributes to the effectiveness of vaccines.

Discuss the potential problems associated with vaccines.