Effect of second booster vaccinations and prior infection against SARS-CoV-2 in the UK SIREN healthcare worker cohort

Peter D Kirwan^*, Victoria J Hall, Sarah Foulkes, Ashley D Otter, Katie Munro, Dominic Sparkes, Anna Howells, Naomi Platt, Jonathan Broad, David Crossman, Chris Norman, Diane Corrigan, Christopher H Jackson, Michelle Cole, Colin S Brown, Ana Atti, Jasmin Islam, SIREN Study Group, Anne M Presanis, Andre CharlettDaniela De Angelis, Susan Hopkins

^*Corresponding author for this work