New ScientistVolume 249, Issue 3316, 9 January 2021, Page 5LeaderThe leaderThe riddle of the coronavirusAuthor links open overlay panelShow moreShareCitehttps://doi.org/10.1016/S0262-4079(21)00001-4Get rights and contentIt is the many unknowns about covid-19 that make it so tricky to beatPrevious article in issueNext article in issueRecommended articlesCited by (0)View AbstractCopyright © 2021 Published by New Scientist Limited. All rights reserved.