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QUIZ: How much of a germaphobe are you?

How much of a germaphobe are you? Put yourself to the test! Try matching the commonly touched surface with the bacteria sample it yielded.

Doctors say the height of the flu epidemic typically spans February and March, so we're not out of the woods yet.

In a WBIR 10News investigation released in February 2017, UT Medical Center armed 10News with 20 Petri dishes and sterile swabs. We tested 20 commonly touched surfaces for bacteria.

READ MORE: Full 10News investigation into germiest spots in your everyday life

Dr. Mark Rasnake is an infectious diseases physician at UT Medical Center.

Everyone is covered with bacteria, he said, the vast majority of which are harmless.

"You only get in trouble when you pick up a pathogen, something that is not part of your normal bacterial or viral flora, that can make you sick," Dr. Rasnake said.

10News tested surfaces including an ATM PIN pad, gas pump handle and men's and women's bathroom sinks.

"Sink handles are often contaminated with other people's bacteria, especially in a bathroom-type environment," Rasnake said. "What we teach physicians to do is, if there is a sink handle, use a paper towel and use that to turn off the water after you finish washing your hands."

See the Centers for Disease Control and Prevention tips on hand-washing HERE.

See the Mayo Clinic's hand-washing recommendations HERE.

All of the surfaces tested were:

1. ATM PIN pad

2. Men's bathroom sink handle

3. Women's bathroom sink handle

4. Human fingertips

5. Kitchen sponge

6. Magazine rack door handle

7. Water bottle (nozzle and the water inside)

8. Steering wheel

9. Office coffee pot handle

10. Public door handle

11. A stranger's cell phone

12. This reporter's cell phone

13. Grocery cart handle

14. Dollar bill

15. Computer keyboard

16. Office carpet

17. Indoor office door handle

18. Gas pump

19. Elevator call button

20. TV remote control

How much of a germaphobe are you? Put yourself to the test! Try matching the commonly touched surface with the bacteria sample it yielded.

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