I'm not sure anyone knows where the "Spanish" Flu originated, but it may in fact have the US. It was certainly spread by US troops. The only reason it is called

I'm not sure anyone knows where the "Spanish" Flu originated, but it may in fact have the US. It was certainly spread by US troops. The only reason it is called "Spanish" Flu is because it happened during WW I and neutral Spain was the only country reporting it in the press, as opposed to US, UK, etc which were censoring the news so as not to look weak during wartime.