The 1918–1920 flu pandemic is commonly referred to as the Spanish flu, and caused millions of deaths worldwide.
To maintain morale, wartime censors minimized early reports of illness and mortality in Germany, the United Kingdom, France, and the United States.[1][2] Papers were free to report the epidemic's effects in neutral Restoration-era Spain (such as the grave illness of King Alfonso XIII).[3] This created a false impression of Spain as especially hard hit,[4] thereby giving rise to the pandemic's nickname, "Spanish flu".[5]