Home Secretary Matt Hancock welcomes the news about the Oxford or Pfizer vaccines effectiveness

The transcript discusses the effectiveness of the Pfizer vaccine in reducing severe COVID-19 infections among those over 70, with an 80% reduction in hospitalizations. It also compares the Oxford and Pfizer vaccines, noting that the Oxford vaccine offers slightly better protection 35 days after the first dose. The results have contributed to a decrease in ICU admissions for people over 80 in the UK.

What is the significance of the results mentioned in the text regarding COVID vaccinations?

What does Professor Van Tam plan to do regarding the vaccine results?