Scientists have been trying to figure out how to eradicate malaria for decades. Globally, a child under the age of five dies from the disease every two minutes, and even for kids who do survive there can be long term complications. A big breakthrough finally came in October when the World Health Organization endorsed MoSQUIRIX, the first malaria vaccine. It has relatively low efficacy, just about 30%, but malaria researcher Winter Okoth explains how the new vaccine could still make a big difference.