Scientists in Oxford have made a breakthrough in developing a new vaccine that could save hundreds of thousands of lives every year.
Malaria is one of the world's biggest killers - causing the deaths of around 650,000 people every year, most of them children under the age of five.
At Oxford University they have been working to prevent the disease for seven years. But now first clinical trials of a new vaccine show it is nearly seventy percent effective. Juliette Fletcher has been to the Jenner Institute to find out more.
The interviewees from the Malaria vaccine trials at the Jenner Institute are: Katie Ewer, Senior Immunologist; and Carly Bliss, Research Assistant.