Hi CC...I haven't had time to look at your link, as I had to make lunch, but I presume it refers to flaws that may have been in some of the equipment used to make the polio vaccine....is that it?
Nooooo...that is not It. I listened to a few minutes of it and it sounds totally....weird The guy in the interview says that polio is a "bacterial degeneration of the spine." And that it takes many years to show up. Both are false. Polio myleitis is a virus, not a bacterium. And it can show up quite quickly. In the Cutter incident, children who got the improperly deactivated virus ended up getting paralyzed in the arm first, where they received the shot. That is REALLY fast!
Secondly, this guy seems to think the polio outbreak after WWII was due to the heavy use of tin cans, with the metal getting into the body and acting like a free radical. He is wrong here both times. First, canned foods have been around since the 19th. century, including right before the war. Also, canned goods in this country are made from steel and aluminim, not tin. Tin is almost entirely absent in N. America. Maybe Europeans use tin, but not here.
Polio has been around for millenia. I even saw online a picture of a man from an Egyptian tomb, who presented classic polio--one leg nice and straight, the other pulled up and shriveled.
American Experience TV show had a story about polio and its history and the vaccine, in the late 1990's. Oddly enough, being too clean may have made Americans more susceptible to the virus. The show said children years ago would get partial immunity from their mother's milk, so if they got the disease when young, it was usually mild--like a bad cold with a stiff neck. They recovered and had lifelong immunity. Being exposed to a certain amount of unsanitary conditions in the centuries prior to the 20th actually protected children from the disease. Then came bottle feeding, and clean, clean, clean...and no exposure even to weakened viruses or collastrum in mother's milk.
I also don't think it is true that the Amish never got polio, or never use canned food. I would need to research a little....yes there was an outbreak in 1997 and 2005, from the attenuated vaccine--the "live" vaccine, which was banned in this country in the late 90's, though it is still used in other countries.
I don't know about using canned foods. They make their own, though using canning jars, as I do.
Anyway, I think we can dismiss what this guy says in your link as being untrue.