what pandemic occured during world war 1

Answer 1

The pandemic that occurred during World War I was the Spanish flu, which spread globally in 1918-1919. It was caused by the H1N1 influenza virus and is estimated to have infected about one-third of the world's population at the time. The pandemic had a significant impact, causing millions of deaths worldwide and complicating the wartime situation. While it coincided with the war, it affected both soldiers and civilians, leading to widespread social and economic disruptions.