Ghana has approved a malaria vaccine developed at the University of Oxford in the UK. With the new vaccine, it is hoped to save hundreds of thousands of lives.
But studies show that the malaria problem is not solved, despite the vaccine. After one year, almost half of those infected with malaria have had at least one new episode of the disease, according to a report by the World Health Organization (WHO) The new vaccine has 80 percent effectiveness, says Kristina Persson, chief physician and malaria researcher at Lund University.