Originally Posted by sobore
http://www.medicalnewstoday.com/medi...p?newsid=51643
The onset of the flu season in the USA has been shown to be influenced by air travel. After flights were restricted following the 9/11 terrorist attacks in 2001, the flu season started about two weeks later than usual.
Interesting side effect. It may also foreshadow what might happen if a 'superbug' ever became an issue.