Mealey's (March 26, 2021, 11:45 AM EDT) -- WASHINGTON, D.C. — The Federal Circuit U.S. Court of Appeals on March 24 affirmed a special master’s ruling that a man who claimed to have suffered longitudinally extensive transverse myelitis (LETM) from an influenza vaccine did not prove causation and that his injury was more likely neuromyelitis optica spectrum disorder (NMOSD), as a government expert witnesses said....