Geography may explain adult mortality from the 1918-20 influenza pandemic.

@article{Mamelund2011GeographyME,
  title={Geography may explain adult mortality from the 1918-20 influenza pandemic.},
  author={Svenn-Erik Mamelund},
  journal={Epidemics},
  year={2011},
  volume={3 1},
  pages={46-60}
}
Seasonal influenza takes its most pronounced toll on children and the elderly, giving the crude age-specific mortality rates a U-shape. In contrast, A(H1N1) 1918-20 pandemic mortality was W-shaped. When adjusting for the seasonal baseline, young adults had higher but the elderly lower than expected mortality. The lower than expected mortality for the elderly is one reason why total mortality in urban societies were relatively low in 1918-20 (<1%). Why mortality peaked at age 30 but declined… CONTINUE READING