Association between Influenza-like illness and acute myocardial infarction patients: A case-control study

Seasonal Influenza can cause cardiovascular complications. Therefore, this study aimed to investigate recent influenza-like illnesses (ILI) in acute myocardial infarction (AMI) patients compared to other hospitalized patients as the control group during the cold season in the north of Iran. This retrospective case-control study included 300 patients (150 AMI patients and 150 controls) aged > 50 years hospitalized for acute myocardial infarction (AMI) or other conditions between September 22, 2019, and March 15, 2020. Patients in each group were frequency-matched for gender and age range. The primary exposure was a recent ILI (fever > 37.8 C, cough, and sore throat) in the past month. The patients9 mean age was 64.42 +- 9.47 years, with a range of 50-94 years. Forty-five (15%) patients had diseases that met the ILI criteria. The AMI group patients significantly reported more ILI than controls (adjusted OR: 3.04, 95% CI: 1.02 to 9.09, p