HIV/AIDS activities; HIV/AIDS Intervention 142. Government has put in place measures aimed at reducing HIV/AIDS infection through blood transfusion. In order to provide safe blood the number of screening centres increased from 33 in 1987 to 90 centres in 2004. Anti-Retro-Viral Therapy (ART) 143. Government has embarked on a programme to mitigate the effects of HIV by making available medication to prevent opportunistic infections for people infected with HIV. The number of people receiving anti-retro viral therapy reached 12,000 in June 2004. The figure has shown a steady rise from 2,833 in March 2004, 5,586 in May 2004 to 12,000 in June. Government implemented the administration of ARVs in three phases. Phase I was implemented at major hospitals (Ndola and UTH), Phase II included all provincial hospitals and Phase III is yet to be implemented. Scaling up of HIV/AIDS Activities 144. Government introduced measures aimed at providing free treatment for all persons infected with Sexually Transmitted Infections (STIs) and Tuberculosis (TB). In addition programmes such as the Zambia National Response to HIV/AIDS (ZANARA) and Community Response to HIV/AIDS (CRAIDS) have been put in place. These oblige all organizations to implement HIV/AIDS activities at the workplace. 73