World AIDS Day 2007 focuses on 'leadership' under the theme 'Stop AIDS, Keep the Promise,' highlighting that 33 million people live with HIV/AIDS, with a significant proportion unaware of their status. The document emphasizes that HIV/AIDS is not only a health crisis but also a development issue, particularly impacting economies and society in developing countries. It calls for action, encouraging individuals to educate themselves and others about HIV/AIDS, respect those infected, and get involved in combating this epidemic.