A human lung infected with influenza during the 1918 epidemic
Drawings by John Adami, Guy's Hospital
The 1918-19 influenza epidemic killed between 20 and 40 million
people globally. This was more than all those who died in the First
World War, which was coming to an end as the epidemic began. In
fact, the massive troop movements of the war speeded up the spread
of the virus around the world.