Tachi Yamada : The number of malaria cases has declined by 25 in 25 countries . Zambia has virtually eliminated the disease over 2005 . Zanzibar expanded the use of insecticides , bednets , and appropriate treatment . -- I recently accompanied Margaret Chan , Director General of the WHO , and Ray Chambers , U.N. Special Envoy for Malaria , on a trip to Africa to see firsthand the region 's fight against malaria . Bill & Melinda Gates Foundation helps funding a malaria control program .
Tachi Yamada : The number of malaria cases has declined by 25 in 25 countries . Zambia has virtually eliminated the disease over 2005 . Zanzibar expanded the use of insecticides , bednets , and appropriate treatment . Bill & Melinda Gates Foundation helps funding a malaria control program .