(A) Prevalence of malaria parasitaemia in control and intervention schools at baseline, 12-month, 15-month and 18-month follow-up. (B) Prevalence of anaemia in control and intervention schools at baseline, 12-month, 15-month and 18-month follow-up. (A) Prevalence of malaria parasitaemia in control and intervention schools at baseline, 12-month, 15-month and 18-month follow-up. (B) Prevalence of anaemia in control and intervention schools at baseline, 12-month, 15-month and 18-month follow-up. Siân E Clarke et al. BMJ Glob Health 2017;2:e000182 © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.