Boris Johnson COVID-19 press conference about booster vaccines

The video discusses the UK's plan to increase vaccination capacity to combat the Omicron variant. It outlines the expansion of vaccination sites, including community pharmacies and temporary centers, and the deployment of military personnel and volunteers. The speaker addresses public concerns about the variant, emphasizing that the current situation is better than a year ago. Precautionary measures are being taken while scientists study Omicron. The video concludes with a call to action for the public to get vaccinated and support the NHS.

What sentiment does the speaker express about the Omicron variant?

What is the speaker's message regarding public participation in the vaccination program?