M8asonmiller t1_iy9ej77 wrote
Reply to comment by LordFauntloroy in ELI5, why do viruses and bacteria have many of the same symptoms when they infect a human? by tapeness
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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