Ducks are seen at a farm in Tia village, 30 Km (17 miles) outside Hanoi, Vietnam November 14, 2005. Bird flu might have infected two more people in Vietnam, where scientists say it has mutated into a more dangerous form that could spread in mammals. State newspapers said on Monday a student was being tested in hospital after eating chicken eggs along with samples from a 78-year-old woman who died from pneumonia in the central province of Quang Binh on Friday. REUTERS/Kham