Scientists have uncovered a chain reaction which could link Enterococcus faecalis bacteria living in our intestines to the development of colon cancer.
India, Bangladesh, Vietnam and mainland China also experienced new outbreaks of H5 N1 influenza in December. During the same period, four new human cases - in Egypt, Cambodia and Indonesia - were reported to the World Health Organization. A 16-year-old girl in Egypt and a 2-year-old girl in Indonesia have died.