The new coronavirus COVID-19 made Dr. Jag Singh a patient at his own hospital.A lung infection made it difficult for him to breathe. His doctors at Massachusetts General said he needed to make a decision about life support while in intensive care.Then, they offered him a chance to test remdesivir.The experimental drug has had some good results when used against other coronaviruses. Singh, a heart specialist, said ‘yes’ immediately.COVID-19 patients around the world have been joining remdesivir studies in the past few weeks.The interest has been so great that the U.S. National Institutes of Health (NIH) is expanding its study. It has nearly reached its first goal of 440 patients.The California company Gilead Sciences makes the drug. It is increasing its own studies too.“I would enroll my family” immediately, said Dr. Libby Hohmann. She placed Singh and nearly 30 other patients in the NIH study at Massachusetts General.