Ethically impossible to come up with a vaccine within 7 years according to the IACUC, who governs medical studies on animals and humans with several phases/trials before it get to human trials. What this tells me is either one of two things,...... 1) someone knew about it and has had ample time(3+ years) to develop a vaccine which means it was a planned release, or 2) everyone getting this vaccine is just a test subject for the government .......