Public Health England has assessed the vaccine rollout:

  • found protection against death rises from about 80% after one dose of the Pfizer-BioNTech vaccine
  • 97% after two doses

Researchers are seeking more data on the two AstraZeneca doses

  • that vaccine rollout started later than Pfizer's
  • However, Public Health England said just one AstraZeneca dose reduced the risk of death by 80%

These are impressive numbers. The research is yet to be peer-reveiwed.

More here at the link

Public Health England has assessed the vaccine rollout: