Long-Haul COVID Comes into Focus Thanks to St. Louis Doctor’s Research

Long-haul COVID-19 has proven one of the most troubling mysteries in a virus that’s caused no shortage of bafflement. Why do some people hospitalized with the virus develop symptoms that linger for months after infection? And, perhaps more bewilderingly, why do some patients who recover from mild COVID cases also end up saddled with lingering difficulties, including fatigue, shortness of breath and difficulty concentrating? Read more…