Being able to walk, albeit with orthopedic braces, is not something Ross Wightman takes for granted. Wightman, 40, suffers from Guillain-Barré syndrome, a rare condition that affects the nervous system. A husband and father of two young boys, the Lake Country man said he was diagnosed with the disorder last spring, less than two weeks after receiving the AstraZeneca COVID-19 vaccine. “At that point, (the concern was around) blood clotting,” Wightman said, reflecting on when he took the vaccine. “But I figured it was best just to get it over with and move on with life, hopefully, and, you know,...