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 the UK Health Security Agency:

Each vaccine was originally tested in more than 20,000 people and has now been given to millions of people in many different countries. Over 100 million doses of the vaccine have been given in England alone.

Scientists are currently trying to find out more about how well the vaccines work against the new Omicron variant. Click here for the latest information. The NHS is currently working to offer everyone over 18 a booster jab by the end of the year. It’s never too late to book your first, second, or third vaccination.

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
  • Scientists are researching how well the Pfizer/BioNTech vaccine will work against the Omicron variant

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
  • Scientists are researching how well the Oxford/AstraZeneca vaccine will work against the Omicron variant
  • Scientists are researching how well the Oxford/AstraZeneca vaccine will work against the Omicron variant

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%
  • Scientists are researching how well the Moderna vaccine will work against the Omicron variant
This content has been reviewed by clinicians and public health professionals Page last reviewed: 21 December, 2021