Boris Johnson and Patrick Valance - Downing Street Daily Press Briefing on Coronavirus

The transcript discusses the early data on vaccine efficacy in the UK, highlighting the need for cautious interpretation and action. Public Health England has published encouraging data, but experts like Patrick Vallance stress the importance of waiting for comprehensive data before making decisions. Despite high vaccine uptake, many remain unvaccinated, necessitating a careful approach to lifting restrictions to avoid setbacks.

What does the speaker suggest about the number of unvaccinated individuals and their risks?

Why is it important to proceed cautiously in opening up society according to the speaker?