The coronavirus has changed since it left Wuhan. Is it more infectious?
LA TimesA version of the coronavirus first seen in Italy four months ago has overtaken the original strain from Wuhan, China, and is now dominant around the world, scientists reported Thursday. The study authors, led by Bette Korber, a computational biologist at the Los Alamos National Laboratory, posted a preliminary version of the work in May that generated substantial controversy by claiming the mutation in the spike protein made the virus more contagious. In a commentary that accompanies the study, three scientists from Yale, Harvard and Columbia agreed that the mutation affecting the coronavirus spike protein is “now dominant in many places around the world.” But the significance of that is far from clear, they wrote. As researchers learned during the Ebola epidemic, “it’s impossible” for tests in a lab to show that “a single mutation alone would have a major impact on a large, diverse human population.” It’s also “unlikely” that the mutation will make the virus more resistant to drugs or vaccines, the authors of the commentary wrote.