At the end of World War I, soldiers coming back to London, England from the Western Front brought with them a particularly infectious version of influenza referred to as the “Spanish Flu”. Exact metrics are unknown because of poor data collection during the early 20th century but an estimated 50,000,000 (50 million) deaths occurred, 3x as many people than that which died during the entire span of World War I. Spanish Flu had its most devastating blitzkrieg upon London in the autumn of 1918, as thousands civilians and soldiers, weakened from 4.5 years of war, became ill within a few short days of Armistice Day. Spanish Flu works quickly to destroy the lungs of healthy victims, with those who contracted the pathogen feeling fine in the morning and often found dead, later that same evening. In 1918, 320 people died of Spanish Flu in London, but during 1919, Spanish Flu had a resurgence and exploded in severity with 16,000 – 23,000 people killed, a surge which caused a shortage of gravediggers and coffins, classifying Spanish Flu as the worst epidemic in living memory. The Spanish Flu outbreak came to an end in May of 1919 once enough of the British population had experienced the infection and either been killed or having survived, becoming immune to the point that the disease could no longer be passed through hosts efficiently enough to continue its spread