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[deleted] t1_jadv2od wrote

Reply to comment by Linzold in [eli5] Black plaque was not exactly cured, how did it just disappear from Europe in 1353? by Linzold

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Bensemus t1_jae6mej wrote

You become immune by surviving the disease. For some they will show no symptoms and it seems like they were always immune. Many will develop symptoms of varying severity and survive the infection. Now they have some immunity to the disease.

You either survive and gain immunity or die.

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