The picture we have of the 1918 flu pandemic is vastly more detailed today than it was 20 years ago, let alone 50 or 100 years ago. But it’s nowhere near complete. Pathologist Jeffery Taubenberger of the US National Institute of Allergy and Infectious Diseases – the man who in 2005, with his colleague Ann Reid, published the genetic sequence of the virus responsible for the pandemic – said at a recent conference there were still many unanswered outstanding questions.

Researchers all over the world are working hard to answer them. But what they have already uncovered might surprise you.
http://www.bbc.com/future/story/2018...e-20th-century