TED-Ed: How do vaccines work? - Kelwalin Dhanasarnsombut

The video explains the history and development of vaccines, starting with Edward Jenner's discovery of the smallpox vaccine. It details how the immune system works to protect against diseases and how vaccines mimic this process to prepare the body without causing illness. Various types of vaccines, including live attenuated, inactive, and subunit vaccines, are discussed, along with their benefits and limitations. The video also introduces DNA vaccines, which use genetic material to trigger immune responses, and highlights the potential for future vaccine developments to combat diseases like HIV, malaria, and Ebola.

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