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. 2023 Feb 15;86(4):361–368. doi: 10.1016/j.jinf.2023.02.016

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Fig. 2 — Regional weighted, adjusted total antibody prevalence in primary and secondary students participating in Round 1 (10 November–10 December 2021) of SIS2 and N and S antibody positivity in 17–30 years old in NHSBT serosurveillance data. NB: NHSBT data use NHS regions; therefore, data for the Midlands were used for comparison with our cohorts in the East and West Midlands. North East data were used for comparison with our cohort in Yorkshire and the Humber. NHSBT data are weighted by age and sex.