The first human has died from the H10N8 avian flu virus, which has only been detected in birds until now. Take a look at history's four main flu outbreaks.
The Spanish flu came on quickly. Some people felt fine in the morning but died by nightfall. People who caught the Spanish Flu but did not die from it often died from complications caused by bacteria, such as pneumonia.
The following five celebrity urban legends will likely live on long into the future, despite the fact that none of them is remotely true.
Whatever their reasons, more than a few stars have decided to walk away from their chosen fields only to get the itch and return -- some more than once. Take a look at some celebrities who have "unretired."