ECDC has published Rapid risk assessment: Human infection with a novel avian influenza A(H7N9) virus, China - Third update. This is a major document with a great deal of detail. Click through to download the PDF. The abstract:
This updated risk assessment summarises all available information on the novel avian influenza A(H7N9) and assesses the situation as of 27 January 2014, focusing on new developments since the ECDC rapid risk assessments of 3 April 2013, 12 April 2013 and 8 May 2013.
The document assesses the risk associated with the outbreak of avian influenza in China to public health in the EU/EEA and attempts to anticipate future developments (disease scenarios, availability of vaccination, human-to-human transmission).