21.  End of new lead.

22.  Frustrated health officials were desperate for new leads that would help them head off Williams before he could infect anyone else.

23.  He checks in with two sites on the World Wide Web where people can send new leads.

24.  He provided no details, however, about any new leads and few details about how investigators were conducting their inquiry.

25.  His investigators will follow any new leads that come their way, he said.

26.  I got no new leads.

27.  In fact, sometimes doctors choose to leave a stuck wire in place and insert a new lead alongside it.

28.  Jacqueline Vasquez has been missing for nearly as long as Chandra Levy has, and police say there are no new leads.

29.  McCormack said that investigators had called him several months ago to alert him that there were potential new leads in the case, but he would not comment further.

30.  Officials had debated whether to make the precise contents of the notes public, hoping to prompt new leads, but decided against it.