But what about what’s happening under the nail ... usually confined to one or two nails and can involve fingernails or toenails.” “Bacteria that [are] not completely removed from a nail ...

Dirt and germs can live under fingernails and contribute to the spread of some infections, such as pinworms,' the CDC noted. 'More dirt and bacteria can gather under long nails than short nails ...

For example, scratching up the inside of your nose opens the door for a nasty bacteria that lurks under your fingernails, Staphylococcus aureus. More from Science Narrator: Odds are you are ...

make sure to use the lather even under your nails to reduce bacteria on the fingertips. You may wash your hands using ...