So...multiple pharmaceutical companies all arrive at a vaccine at virtually the same time?

The Chinese scientist that shared the genome and modern medical's ability to product a vaccine is why they all came out at about the same time. The vaccine - as that word is defined - was created in January. It had to go through testing, refinement, delivery method, and transport definition to be able to be released, all of which was a prime focus for every player med company this year. It's not a surprise they are being released right now. It is a surprise that you are only hearing about the progression of these vaccines NOW, after the election. Or maybe not a surprise.