"I have to": British nurse who survived Ebola will return to west Africa

The 29-year-old said Wednesday that he is preparing to fly back to Sierra Leone to help fight the outbreak that has claimed almost 4,500 lives. “I know my mum and dad are worried but they know it’s something I have to do,” he said while at a training session for U.K. health workers who have volunteered to help on the ground to combat the spread of the disease.