Measles is on the rise.

http://www.nytimes.com/2008/05/02/health/02measles.html

"Measles outbreaks in at least seven states are expected to produce more cases in 2008 than in any other recent year, federal health officials said Thursday, warning that measles is highly contagious and can cause severe illness and even death.

There were 64 cases from January through April 25, more than in all of 2006 and the highest number during that four-month period since 2001. None have yet proved fatal, but officials said they expected the total to keep rising...."