The absolute percentage point change (grey bar) and percentage change relative to the baseline scenario (orange bar) following the introduction of the WHO 2010 case management guidelines advocating diagnostic-led treatment for all ages in Tanzania in 1) estimated proportion of attending cases correctly treated (both malaria and NMFI); 2) proportion of malaria cases correctly treated and 3) proportion of NMFI cases given an ACT. Data used were collected during the early period of the rollout of the new guidance and thus may not reflect more recent improvements in case management.