RR: Unadjusted risk ratio
aRR: Adjusted risk ratio; Adjusted for age, sex, tobacco use, hypertension, diabetes, high blood cholesterol, heart failure, exercise level, previous history of CHD, family history of CVD and BMI
§Includes both annual influenza seasons of 2017 and 2018
Table 5: Association of influenza seasons with ST-elevation myocardial infarction