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LordFauntloroy t1_iy90shl wrote

All of the above are the body using various methods to expel or combat the virus. They're similar for many viruses because those are the tools our body has to fight viral infections (though obviously it's not all the tools)

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M8asonmiller t1_iy9ej77 wrote

Plus stuff like sneezing, coughing, and diarrhea are useful for getting new bacteria and viruses out of the body and into another host. So germs that cause those kinds of reactions have a selective advantage.

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