The Lubbock Health Department says telling someone they've been infected with an STD is serious business, and it appears a prankster is trying to turn it into a joke. They say someone is prank-calling people and telling them they're infected with HIV. The caller claims to be with the Lubbock Health Department, and delivers the bogus, bad news. Officials with the health department say they never release medical information over the phone so, if you get a similar call, don't panic. Instead, they want you to realize it's someone playing a joke and they ask that you call them immediately at 775-2399 to report the prankster. They say they are looking into pressing criminal charges against the caller, if or when he or she is caught.