Study links COVID infection to heart attacks, strokes University of Minnesota Twin CitiesSevere COVID-19 infection increases heart attack and stroke risk as much as having a history of heart disease, study finds University of Southern CaliforniaCOVID may increase risk of heart attack, death years after infection: study WGN TV ChicagoCOVID-19 may increase heart attack and stroke risk for years American Heart Association NewsThe Long Haul: How COVID Continues to Threaten Your Heart Years After Infection SciTechDaily