Bird flu has killed a second man in Vietnam this week, infected a child and poultry in two provinces and a health official warned more people would fall sick of the virus, Reuters quoted the government sources and state media as saying on Saturday. The 27-year-old man died on Thursday night at a Hanoi hospital after he was taken there from the northern province of Ninh Binh on Tuesday with serious pneumonia, the official Vietnam News Agency reported. On Jan. 31 he slaughtered two sick chickens and fell ill two days later with pneumonia symptoms, the Health Ministry has said. His death is Vietnam's third this year from bird flu. Doctors also confirmed a 7-year-old child from the northern province of Hai Duong had the H5N1 virus and was being treated at a paediatric hospital in Hanoi, the Vietnam News Agency said without disclosing the gender or details of the infection.