At this time, there are no cases of avian flu H7N9 outside of China. Human infections are uncommon and have typcially followed exposure to infected poultry. There is no present evidence to support person-to-person spread of the H7N9 virus. However, influenza viruses constantly change and it’s possible that this virus could become able to easily and sustainably spread between people. The outbreak of the H7N9 virus is being closely monitored internationally.