Netcast TWiV 229: Partly cloudy with a high of H7N9 April 21, 2013 Tagged as: avian H7N9, brambling, China, duck, H2N9, influenza, pandemic, reassortant, Shanghai, Vaccine, viral, virology, virus, WHO, wild bird Vincent, Rich, Dickson, and Alan review the current status of human infections with avian influenza H7N9 virus.