Belgium's Princess Astrid (2nd R) waves on a dinghy on the Roll Back Malaria Zambezi Expedition in the Katombore village about 60 km (37 miles) from Livingstone April 23, 2008. Zambia will host the World Malaria Day in the presence of Belgium's Princess Astrid, Goodwill Ambassador of the Roll Back Malaria Partnership on April 25. The medical teams of the expedition will travel more than 2,500 km (1553 miles) in inflatable boats through Angola, Namibia, Botswana, Zambia, Zimbabwe to deliver mosquito nets and medications to remote areas. REUTERS/Thierry Roge (ZAMBIA)
REUTERS/THIERRY ROGE