Not much globalisation back in 1918. But there was the anomaly of very large numbers of soldiers repatriating after the end of World War I in cramped condition

Not much globalisation back in 1918. But there was the anomaly of very large numbers of soldiers repatriating after the end of World War I in cramped conditions with poor health & hygiene standards. It would be interesting to model what could have happened if the Asian Flu of 1956 and the Hong Kong Flu of 1968 occurred within a much more connected and logistically faster world like today.