UK: Prime Minister Boris Johnson hosts coronavirus press conference inside 10 Downing Street.

The video discusses the progress and effectiveness of the COVID-19 vaccination program in the UK. It outlines the four tests set by the government, focusing on the first two: successful vaccine deployment and evidence of vaccine effectiveness in reducing hospitalizations and deaths. Data on the Delta variant is presented, showing the need for two doses for strong protection. The video concludes with positive data on vaccine protection against severe disease and hospitalizations.

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