same for you; your false idol the vax is at risk of being exposed lol
You really think that the first question is wonder what is tax study is. The antivaxxers are ghoulish trolls, salivating and aroused over anything that could be a death from a vaccine in order for you to be right. You are disgusting.
In no particular order the differential diagnosis is:
Q on T syndrome
Prolong QT (familial)
Shock from other causes (distributive / hypvolemic)
All of which are more likely in an athlete than any other — we have no idea what occurred seconds before the collapse — was he hit on the chest, did he take a ball to the chest.
Your instant need to blame vaccines is as uneducated as disgusting.
But thank you for again proving that your antivax acolytes pray and hope for bad things to happen to people. Really reveals a lot about your side.