HEFEI, CHINA - JANUARY 28: (CHINA OUT) A nurse prepares to give a inoculation to children for epidemic encephalitis at a hospital on January 28, 2005 in Hefei of Anhui Province, China. A kind of epidemic encephalitis has appeared in Maanshan City of Anhui Province, medical departments are taking measure to control the disease.The Anhui Disease Control Center has sent at least 5,000 doses of encephalitis bacterin to hospitals of the city. (Photo by China Photos/Getty Images)