Final answer:
To avoid contaminating your hands after washing, use a paper towel to turn off the faucet and open the restroom door. This minimizes the risk of transferring pathogens from commonly touched surfaces to your clean hands.
Step-by-step explanation:
If you are not careful, you can contaminate your hands after washing them. Consider using a paper towel to turn off the faucet and to open the door when leaving the restroom. This practice helps in preventing the spread of microorganisms that might be present on the surfaces of the faucet and the door handle, especially in public restrooms.
When you have clean hands, it is important to avoid direct contact with potentially contaminated surfaces. The Centers for Disease Control and Prevention (CDC) emphasizes the importance of hand hygiene, advising the use of a paper towel or a similar barrier between clean hands and surfaces that could be contaminated. This simple action can significantly reduce the risk of transmitting pathogens.