Chinese workers listen to speeches during the "National Migrant Workers HIV/AIDS Awareness Campaign" ceremony marking World AIDS Day in Beijing December 1, 2005. Chinese health officials are grappling with when and how to announce new estimates of China's AIDS epidemic and facing an unusual problem which is that previous estimates may be too high. For three years, Beijing has said it has about 840,000 people with HIV, but this figure was a broad projection arrived at by inferring the infection rates among key "risk groups".