It was a simple narrative. A single virus caused paralysis. A vaccine saved us. But what if the story is wrong? Polio outbreaks followed a strange pattern: they peaked in summer, faded in fall, and vanished by winter. That's not how a highly contagious virus behaves—it's how a seasonal toxin behaves. Consider this: lead arsenate was widely used as a pesticide, especially in apple orchards, during the very months polio cases spiked. The symptoms of lead arsenate poisoning—nausea, vomiting, muscle cramps, headache, paralysis—bear a striking resemblance to polio. And here's the kicker: secondary transmission among household contacts was negligible. In hospitals, children with polio were placed in open wards—and no one else got sick. In animal experiments, no animal transmitted the disease to another, no matter how intimately exposed. Domestic animals—chickens, dogs, horses, cattle—often exhibited paralytic diseases during polio outbreaks, suggesting an environmental link. What if we've been treating a poisoning as an infection? Read the full investigation here: romanbystrianyk.substack.com…