Well, the flu season is soon upon us and if you have been listening to the news and local reports at all, there are some interesting developments. One of these is that the period that a person remains contagious with the H1N1 virus is longer than expected. Instead of 1-3 days, the expected contagious period is 7 days, and there is also speculation that until the person stops coughing, they should be considered contagious.
The vaccination for the flu is being fast-tracked to accomodate the demand to help curtail the virus. I would encourage you to read more about that here.