Are we expected to believe that the vaccine made Ross big hearted??
You're expected to believe that if you sit around for 20 minutes for "observation" after getting jabbed with an unnecessarily high dose, then there is no circulation, the vaccine is going to sit in your arm and slowly travel from there to your heart. Ergo the safety measure is what leads to an accumulation of the toxin in your heart causing the inflammation. Alternatively, if you walk to the site to get the circulation going, then tell them to go fuck themselves and walk straight out after the jab and carry on walking for a good hour, the toxin will get diluted more quickly into your entire body, avoiding the inflammation but causing the worst flu of your now shortened life.
Alas, scientists no longer understand fluid mechanics and mass transfers across concentrations gradients. So they will keep you under observation because they're stupid.