Today we begin with a critically important investigation that stands to impact millions. Only now are scientists starting to unravel some of the most confounding mysteries surrounding the many illnesses that can linger similarly after both Covid and Covid vaccines or sometimes suddenly emerge months or years later. Many physicians are left in the dark, without effective treatment guidance from public health experts. But we found one doctor-turned-medical-detective whose findings are viewed as so groundbreaking, his help is sought-after from doctors and patients across the U.S. and beyond.