Yeah, who knows? And that's the point, we don't know. Vaccines and other medical interventions have historically killed and maimed hundreds of millions of people. Time and time again, we are taught the lesson that meddling in nature can sometimes have horrible consequences, yet we never learn. Even in the present day, vaccines and other interventions harm and kill millions. The idea of pushing one through without the usual 10 year testing period is just ridiculous. Most doctors not on the elite payroll are horrified by the idea.