Vaccination Proof Requirements Then And Now

The video discusses the spread of the Delta variant and NYC's vaccine mandate for indoor spaces. It highlights the history of vaccine mandates in the US, including smallpox and measles, and the legal backing for such mandates. The video also covers current COVID-19 vaccine mandates in schools, companies, and the federal government, emphasizing the goal of achieving herd immunity. Despite the effectiveness of COVID-19 vaccines, full FDA approval is pending, affecting some mandates.

What challenges are mentioned regarding the COVID-19 vaccine's approval status?

What percentage of the population is required for herd immunity against measles according to the World Health Organization?