Hint: it’s not the bathroom.

Niina Ikonen and Carita Savolainen-Kopra from the Finnish Institute for Health and Welfare studied high-traffic areas in the Helsinki airport to identify where germs were most prevalent. Also, tips on how to stay healthy during your holiday travel.

Here’s their original paper in the journal BMC Infectious Diseases.

Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.

This episode was produced by Brent Baughman and edited by Viet Le.

Short Wave Podcast

It’s science for everyone, using a lot of creativity and a little humor. Join host Maddie Sofia for science on a different wavelength.