eli5: Why was the second wave of the Spanish Flu so much deadlier than the first?
In: Biology
For new diseases in general the good thing about a first wave is it starts with one person in one place.
The problem is it takes time to get noticed and time to understand how to make good decisions. Also nobody has resistance yet.
The second wave is the opposite. A second wave can start from thousands of places at once. You know how to fight it. But if you aren’t making good decisions you have mostly negatives.
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