‘Long-haulers’ battle Covid-19 for months, but research into why is scant

Although most cases of Covid-19 appear to be mild with a recovery time of a few weeks, health experts are seeing more patients who suffer symptoms for months or get better only to relapse down the road. These “long-haulers” may face organ damage or such debilitating symptoms that even climbing a flight of stairs can put them back in bed for days, experts say. Experts estimate some 10% of Covid-19 patients – or hundreds of thousands in the U.S. alone – may fall into this category. And yet…