Following the Omicron wave, the majority of children in England have evidence of previous COVID infection. Issue 3 (March 2023) - Oeser, C; Whitaker, H; Borrow, R; Linley, E; Tonge, S; Rowe, C; Otter, A; Warrener, L; Campbell, CNJ; Ladhani, S; Ramsay, M; Brown, KE; et al.