Expert on benefit of UK delaying second vaccine dose

The video discusses the UK's approach to managing COVID-19 vaccine shortages by extending the gap between doses, which initially faced skepticism due to lack of clinical trial data. Despite criticism, this strategy aimed to reduce hospitalizations and mortality rates. The WHO later supported this approach in shortage scenarios. The video also explores the potential benefits of mixing vaccines, which could enhance immune response and alleviate supply chain pressures.

How did the first dose of the vaccine contribute to immuno protection according to the text?

What potential future strategies are suggested for addressing vaccine shortages?