One of the first organisations that springs to mind when you think about global health is the World Health Organization (WHO). Its well known website www.who.int is a reliable and endless resource covering international classifications, diseases outbreaks, world reports, health emergencies, and public health world mapping. If you are looking for information on a specific country you can find it here. The site includes a comprehensive database of all the countries in the world with data on health indicators, health systems, and specific health conditions. This site also offers information on projects, initiatives, activities, information products, and contacts for a wide range of topics.
For further information on health projects happening worldwide, have a look at one of the United Nations' agencies, like UNAIDS. Their website, www.unaids.org, is a complete and reliable collection of AIDS related information, including data, events and projects listings, and videos of important speeches. See www.unsystem.org