Boris Johnson defends introduction of Covid-19 tier system

The video discusses the production capacity of the Oxford AstraZeneca vaccine, highlighting its potential to produce 350 million doses annually. It emphasizes the importance of vaccine approval by the MHRA and the cautious optimism surrounding the Pfizer and Oxford AstraZeneca vaccines. The current lockdown measures and their effectiveness in controlling the virus are reviewed, along with the tier system's role in public health. The video concludes by discussing the balance between restrictions and the hopeful future outlook with vaccines and mass testing.

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