Kenya, Ghana, Malawi Chosen For Breakthrough Malaria Vaccine Trial

The World Health Organization has announced that trials of a new malaria vaccine will take place in three African countries – Kenya, Ghana and Malawi. They have been selected for their high prevalence of malaria and strong existing immunization programs for other diseases. The announcement was made ahead of the U.N.’s World Malaria Day Tuesday. And as Henry Ridgwell reports, the chosen theme for this year is "a push for prevention."