The WHO on Wednesday "released new guidelines [.pdf] providing technical recommendations on effective interventions for the prevention and treatment of HIV and other sexually transmitted infections (STIs) among sex workers and their clients," New Europe Online reports. "The guidelines were developed in cooperation with the United Nations Population Fund (UNFPA) and the Joint United Nations Programme on HIV/AIDS (UNAIDS) and are directed, in particular, to national public health officials and managers of HIV/AIDS and STI programs, non-governmental organizations and health workers," the news service notes (Gaydazhieva, 12/13).