This history – especially the unknown consequences of interactions with malnutrition and existing infections – should warn us that COVID-19 might take a different and more deadly path in the slums of Africa and South Asia. The danger to the global poor has been almost totally ignored by journalists and Western governments. The only published piece that I’ve seen claims that because the urban population of West Africa is the world’s youngest, the pandemic should have only a mild impact. In light of the 1918 experience, this is a foolish extrapolation. No one knows what will happen over the coming weeks in Lagos, Nairobi, Karachi, or Kolkata. The only certainty is that rich countries and rich classes will focus on saving themselves to the exclusion of international solidarity and medical aid. Walls not vaccines: could there be a more evil template for the future?