20-40 million died
believed it was evolved from bird flu, possibly in the us
infected 20% of world population
proved most deadly for 20-40 year olds
troops returning home spread it across the world
symptoms: headaches, sore throat, loss of appetite, fever
no treatments or antibiotics
death rate was 20%
treatment ideas: wearing masks, social distancing, giving up smoking, opium/laudanum etc., gargling with salt water, boiling handkerchiefs, drinking beef tea, rest, drinking no/a lot of alcohol