my son is 38 yoa other than a light case of flu systems he had no other visible system. during the last days approximately 4 he may have coughed 2 times. He continued to work as normal. Aside from this my wife was having extensive surgery carotid arteries both right and left, deformed left valve since early life replaced and anterior {widow maker} partially blocked so we kept he away from her much of the time, depending on phone conversation for passing information back and forth. He called me after supper the last night we were there and going home the next day and he asked what to do for his cough and I told him to go to a pharmacy ask the best the remedy or go to a clinic. The next night a clinic called and wanted to know if he and I were related, we exchanged information and I got on the road back. They said when he arrived he was unconscious showing signs of being systemic and had coded 2x s since talking to them earlier. He coded 2 more times after I got there and I told them to take him off the life support machine. Is there any thing I could have done?