When the SARS (Severe acute respiratory syndrome) epidemic broke out in 2002, Israeli scientist Dorit Arad was alarmed. She was living in the US at the time, and had to fly frequently for her work, exposing herself to risk. During the outbreak, which lasted from November 2002 to July 2003, 774 people died of the highly contagious respiratory disease - a mortality rate of 9.6 percent."I was panicked,” admits Arad. “I even started wearing a mask.”
