Office for National Statistics

Vaccine effectiveness against COVID-19 – What can the COVID-19 Infection Survey tell us?

A medical professional prepares an injection

As well as providing estimates on infection levels and antibodies, the Coronavirus (COVID-19) Infection Survey (CIS) collects information from participants on their vaccination status, providing some insight into vaccine effectiveness on variants, including Delta.

Our monthly visits to the same participants over an extended period allow us to see who becomes infected over time. Sarah Crofts explains more about our work on vaccine effectiveness:

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