We read with interest the study of Liu et al. [1], investigating the predictive value of the Canada Acute Coronary Syndrome (C-ACS) risk score for post-infarction infection among patients hospitalized due to acute myocardial infarction (MI). The C-ACS score has been proposed as an early risk stratification tool at the time of presentation of patients suffering an ACS [2]. Acute coronary syndromes are manifestations of acute myocardial ischemia and include either ST-segment elevation myocardial infarction (STEMI) or Non ST-segment Acute Coronary Syndromes (NSTE-ACS).