Several asian countries established quarantine just fine. And the spanish flu was globally distributed by troop movements during WW1. There even were anti-maske

Several asian countries established quarantine just fine. And the spanish flu was globally distributed by troop movements during WW1. There even were anti-maskers. https://en.wikipedia.org/wiki/Anti-Mask_League_of_San_Francisco https://en.wikipedia.org/wiki/Anti-Mask_League_of_San_Franci... The spanish flu was even more severe since its lethality followed a W-shape instead of predominately affecting old people.