This takes on EXACTLY the same form as the Trump-Russia nonsense.
The author has one small, random, post-hoc, bit of information (Lyme disease was found near a government laboratory in Lyme CT - although it existed for millennia before then as well) and spins it into cascade of possible lies, potential cover-up, and even Nazis.
This theory goes back a while. There is much more evidence. I read this book a few years ago: https://www.amazon.com/Lab-257-Disturbing-Governments-Laboratory/dp/006078184X/ref=sr_1_2?ie=UTF8&qid=1495216837&sr=8-2&keywords=plum+island
I definitely don’t consider myself a tin foil hatter - but I think its completely plausible that the vector’s origination for the *breakout* (they may not have completely bioengineered it — and it quite well could have been an accidental release) was plum island.