Interview with NHS director Stephen Powis on new mass vaccination centres

Professor Stephen Powis, the National Medical Director of the NHS in England, discusses the expansion of large-scale vaccination centers across the country, including a new one in Wembley, London. The vaccination program, which began in December with the Pfizer vaccine and recently included the AstraZeneca vaccine, is being ramped up to allow more people to receive their vaccinations.

What does ramping up the vaccination program mean?

When did the vaccination program start?