It was recommended that travellers use disinfectant wipes on the tray tables at the beginning of a flight and avoid eating directly off the surface.
Unsurprisingly, aircraft bathrooms also made the list, due to frequent use and infrequent cleaning. Again, Drexel recommended the use of disinfectant wipes, as well as using paper towels to touch the faucet and toilet seat lid. It also said it was best to close the toilet lid before flushing, to prevent the spread of germs.
Before getting cozy under a blanket provided by an airline, remember how many other passengers have been drooling in their sleep. Blankets and pillows are often reused flight after flight, making them a breeding ground for bacteria.
Finally, it seems not even in-flight entertainment is safe. It's all in the name - touch screens have been touched by everyone else who sat in your seat and who knows where their hands have been. The same goes for the in-flight magazine stuffed in that germ-ridden seat pocket.
It's recommended that you bring your own entertainment, be it a book, iPad or laptop, but if you can't resist those in-flight movies, it's time to bring out the wipes again.