 On 1 July 1998, following nearly two years of planning, the National Center for HIV/AIDS Prevention and Control under the Ministry of Health (卫生部艾滋病预防控制中心) was established.This entity became the National Center for AIDS/STD Control and Prevention of the Chinese Center for Disease Control and Prevention (NCAIDS/STD, 中国疾病控制中心性病艾滋病预防控制中心) in January 2002.A number of substantive policy developments related to HIV/AIDS occurred during this period.