As the coronavirus pandemic claims lives and overwhelms health care systems throughout the world, scientists are closely watching several late-stage trials of the antiviral drug remdesivir. Developed to treat Ebola, remdesivir is now being tested against COVID-19. However, many infectious disease experts caution that the trials are unlikely to yield clear-cut results, according to an article in Chemical & Engineering News (C&EN), the weekly newsmagazine of the American Chemical Society.