Project #22:
Investigating the effectiveness of the COVID-19 vaccination programme in the UK.

All adults in the UK are eligible to receive coronavirus (COVID-19) vaccines to protect them against COVID-19. The vaccines currently available are given in two doses. Most people who have had a 2nd dose received it 8 to 12 weeks after their 1st dose. Although clinical trials have shown that the vaccines are safe and effective at protecting against COVID-19, there are still many questions that need to be answered in order to understand longer term effects of vaccination and keep people protected against COVID-19. Our work aims to understand the long-term effects by answering questions such as:

• Which groups are choosing not to get their COVID-19 vaccines?
• Does the protection given by the vaccines against COVID-19 infection, hospitalization and death reduce over time?
• Does the time between the 1st and 2nd doses affect the efficacy of the vaccines against COVID-19 infection, hospitalization and death?
• What is the effect of additional (more than 2) doses of the vaccine?