How Vaccines Help Eradicate Diseases: A History and Impact

The video discusses the history of plagues and the crucial role vaccines have played in human survival. It highlights the case of the polio virus, detailing its impact and eventual eradication through vaccination efforts. The video explains how vaccines work by training the immune system to develop antibodies, leading to immunity. It also covers the concept of herd immunity, which protects even those who are not vaccinated. Finally, the video touches on the COVID-19 pandemic, emphasizing the importance of vaccines in controlling the virus and allowing a return to normalcy.

What is herd immunity and how does it relate to vaccination?

How do vaccines contribute to human health and longevity?

Discuss the effects of COVID-19 and the role of vaccines in managing the pandemic.