An 18-year-old teen who recently received a shot of COVID-19 vaccine said he suffered from a heart attack and was diagnosed with heart inflammation following the vaccination. Isaiah Harris, a Springdale resident, received his second Pfizer-BioNTech coronavirus vaccine on April 30 and had been set to attend his graduation on May 1. However, the teenager was later rushed to the hospital where doctors said he developed myocarditis. "I was actually driving down the interstate, and all of a sudden, my heart rate just went way up, and it felt like it was beating out of my chest," Harris recalled, 40/29...