The take-home message is this: Use a surgical mask when you are traveling to areas that have reported cases of swine flu and bring an additional one to give to anyone near you who forgot one or appears to be sick and is coughing or sneezing.

CNN: Commentary: Flu and your health on a plane

"The take-home message for me is that, in clinical settings, wearing a mask or an N95 appears to be essentially equivalent, " says Mark E.

CNN: STORY HIGHLIGHTS