https://www.google.co.uk/amp/s/www.t...-lockdown/amp/
Two doses of either the Oxford/AstraZeneca or Pfizer/BioNtech vaccines gives over 80% protection from infection by the so called “Indian variant.” That’s protection from infection, the protection from severe illness, therefore, will be far greater.
I have to repeat again, that these vaccines are up there with the most effective vaccines ever produced. Providing sterilising immunity of over 80% is an absolutely outstanding result.