Fig. 6

Numbers of contacts for chest-pain syndromes in three different syndromic surveillance systems. These graphs show daily syndromic surveillance data (dotted line) and 7-day moving average (solid line) for a) number of attendances with ‘Myocardial Ischaemia’ at emergency departments b) number of calls to 999 for an ambulance due to ‘Chest Pain’, and c) number of GP Out-of-Hours contacts for ‘Chest Pain / Myocardial Infarction’ as a percentage of contacts with a Read code