Why is it when we get a cut in our mouth(the dirtiest place ever) does it not get immediately infected? ELI5
In: Biology
Infections come from bacteria (and viruses), but not all bacteria is bad! Your mouth contains lots of bacteria that helps protect itself from harmful bacteria – the kind that cause infections, for example. We see mouths as dirty because it’s how a lot of common viruses spread to other people. Your spit can give someone else a cold, but it can’t give you an infection.
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