What has the UK Covid inquiry learned so far about vaccines and treatments?

In fourth part of the inquiry, questons were asked about vaccine trials, procurement and the UK's preparedness for future pandemics

The Covid inquiry has spent the past three weeks delving into the UK vaccine rollout and the decision-making around new and existing therapies for infected and vulnerable people. Here we look at the key findings from the module, the fourth of 10, in the inquiry chaired by Lady Hallett.