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pfmiller0 t1_jdixvik wrote

Reply to comment by Alwayssunnyinarizona in What happened to the old COVID variants, like Delta? Could they come back? by number1dork

Can we say for sure that Delta doesn't exist in animal reservoirs somewhere?

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Alwayssunnyinarizona t1_jdj082m wrote

Some derivative of it likely does, but it's been eons (in viral time) since delta was first identified, so almost without a doubt it has continued to evolve in those reservoirs - much like mammoths have gone extinct but we still see their close relatives in elephants. For the time being, anyway.

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