On September 22, 2020, the United States marked a grim milestone in the ongoing COVID-19 pandemic, with the coronavirus having killed its 200,000th victim. The number of American casualties currently stands at 203,800, the highest of any single nation in the world, with the U.S. suffering over one-fifth of theread more

Health experts around the world are trying to unravel the puzzle as to why COVID-19 infections appear to be relatively benign in some individuals who contract the disease, while others have potentially fatal—and all too often outright deadly—reactions to the coronavirus. Toward that end, researchers are looking to the DNAread more