11.   Although new AIDS infections have been declining among all racial groups, the decline has been less pronounced among black people.

12.   AmBisome also better prevented new infections during treatment, said Dr. Thomas Walsh, a researcher from the National Cancer Institute.

13.   And each new infection gives the virus a new chance to mutate and evolve.

14.   And a quarter of all new infections are among teen-agers.

15.   An estimated two-thirds of all new HIV infections reported in Los Angeles County are among gay or bisexual men.

16.   And AmBisome appeared to cut the incidence of new infections in half, he said.

17.   And AmBisome appeared to cut the incidence of new infections in half, researchers said.

18.   And although new infections are spreading fastest among women who acquire the infection through heterosexual intercourse, as many as half of these women are crack addicts.

19.   Answering these questions allows them to design solutions to prevent new infections.

20.   As a result, and despite its success in treating those already infected, the campaign has not had much impact on the rate of new infections.