HIV infections among homosexual and bisexual men in the United States rose 8 percent last year, after remaining relatively stable the three previous years, new federal data show. The increase for the virus that causes AIDS compares with average annual declines of 4 percent among heterosexuals and 9 percent among intravenous-drug users from 2001 to 2004, according to a report in this week's issue of the Centers for Disease Control and Prevention's Morbidity & Mortality Weekly Report. The CDC said the recent increase in diagnosed HIV infections among men who have sex with other men "may reflect increases in HIV...