Professor Chris Whitty answering questions during Downing Street coronavirus press briefing

The transcript discusses the effectiveness of track and trace systems during an epidemic, emphasizing that their impact is greater when the number of cases is lower. It highlights the role of modeling groups like Sage in analyzing data and exploring various possibilities. The discussion concludes that while there is no magic number for effectiveness, lower case numbers generally lead to more successful interventions.

Why is there no precise way of determining the effectiveness of interventions?

What do modeling groups like Sage focus on regarding epidemic management?

How does the speaker suggest we should approach the range of possibilities in epidemic scenarios?

What does the speaker imply about the concept of a 'magic number' in epidemic management?

What is the relationship between the number of cases and the effectiveness of interventions?