china reported three new cases of h7n9 avian influenza yes terday the latest of more than 30 cases this month amid a winter surge in infections. the three new cases were in the south-eastern province of fujian. twenty-two infections have been reported in the last eight days. state media said health authorities are deeply concerned by the rise in new cases of the virus and its possible spread on crowded public transport before and afthe the lunar new year holiday which begins on jan31.dap