Spanish, to be exact.

19 18 was first launched in February in Finson Barracks, Kansas, USA. 19 18 March 1 1 Before lunch, a soldier in the barracks felt fever, sore throat and headache, so he went to the military hospital to see a doctor. The doctor thinks he has a common cold. However, what happened next was unexpected: by noon, more than1000 soldiers had similar symptoms. A few days later, on the weekend, more than 500 "cold" patients came to this military camp. It soon spread to Detroit and other three cities → the American Expeditionary Force took it to the front line of Europe by boat in March → the French army in April, and then troops from Britain and other countries → Italy, Spain, Germany, Africa, Mumbai and Golgotha in India in May → the British Expeditionary Force spread to Britain in June, and then to Russia, Asia, China, the Philippines, Oceania and New Zealand →1966.