...the twenty first century equivalent of bubonic plague, only instead of killing off a third of the population of Europe it kills 3.4 percent of those who notice they have it. It seems to be fond of the elderly, especially Iranian politicians and holy men...made many headlines because it seemed to confirm what public health experts feared: that someone who has no symptoms from infection with the virus, named 2019-nCoV, can still transmit it to others. That might make controlling the virus much harder.
Chinese researchers had previously suggested asymptomatic people might transmit the virus but had not presented clear-cut evidence. "There’s no doubt after reading [the NEJM] paper that asymptomatic transmission is occurring," Anthony Fauci, director of the U.S. National Institute of Allergy and Infectious Diseases, told journalists. "This study lays the question to rest."