We knew. They keep calling it a mystery... Died Suddenly = doctors baffled. Sudden Cancer = doctors baffled. Sudden Strokes = doctors baffled. Heart Attacks = doctors baffled. Myocarditis = doctors baffled. Blood Clots = doctors baffled. Guillain-Barré Syndrome = doctors baffled. Neurological Problems = doctors baffled. Compromised Immune System =