I got sick with a cold. I started to feel better then my wife got sick with a cold. What’s preventing me from getting sick from the cold that she has now in the future, just like she got sick from my cold and then she getting sick again from my “next cold”, etc — like an infinite loop of colds?

Question

I got sick with a cold. I started to feel better then my wife got sick with a cold. What’s preventing me from getting sick from the cold that she has now in the future, just like she got sick from my cold and then she getting sick again from my “next cold”, etc — like an infinite loop of colds?

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Answer 1

There’s a trillion versions of the common cold.

If you get version 100895B and give that to your wife, your white blood cells are able to retain that and cover any additional times you get it.

You pass along the same cold to your wife, and now you can never get that same version of the cold.