>> It's worth noting that the 1918 flu was unique in that it killed many young, healthy people. > There were two waves to the Spanish Flu. Wave 1 started like

>> It's worth noting that the 1918 flu was unique in that it killed many young, healthy people. > There were two waves to the Spanish Flu. Wave 1 started like the standard flu - it was mild, hitting mostly the old and ill, and not terribly deadly. Wave 2 is when it mutated, spread like wildfire, and killed 2% of the world population. That's sounds similar to the 1977 swine flu. It mainly infected people in their 20s or younger, because it was likely a lab escape of a then-extinct 1950s flu strain. Older people were unaffected because they had already acquired immunity. https://en.wikipedia.org/wiki/Influenza_A_virus_subtype_H1N1#Russian_flu https://en.wikipedia.org/wiki/Influenza_A_virus_subtype_H1N1... https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4542197/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4542197/