Deepak still

Yes, the Covid 19 vaccines work really well – they cut your chances of being hospitalised or dying from coronavirus. Here are the facts based on analysis from Public Health England:

Each vaccine was originally tested in more than 20,000 people and has now been given to millions of people in many different countries.

Pfizer/BioNTech vaccine

  • The Pfizer/BioNTech vaccine is 55%-70% in preventing Covid-19 infections after one dose
  • After two doses, it is 70-90% effective in preventing infection
  • After two doses it will provide 96% protection against hospitalisation from the Delta variant
  • The vaccine has an efficacy of 93.4% against the Alpha variant two weeks after the second dose

Oxford/AstraZeneca vaccine

  • The Oxford/AstraZeneca vaccine is 55-75% effective in preventing Covid-19 infections after one dose
  • After two doses, it is 65-90% effective at preventing infection
  • After two doses it will provide 92% protection against hospitalisation from the Delta variant
  • The Oxford/AstraZeneca vaccine was found to be 66.1% effective at preventing symptomatic disease from the Alpha variant two weeks after the second dose

Moderna vaccine

  • The Moderna vaccine is the third vaccine approved for use in the UK
  • It is 70% effective in preventing Covid-19 infection after one dose
  • After two doses, the efficacy against the virus is 94.1%
This content has been reviewed by clinicians and public health professionals Page last reviewed: 12 August, 2021