Who are officially stating family clusters and h2h transmission.
This virus is evolving as we speak and will likely pick up the ability for sustained effective h2h if it hasn't already.
http://www.examiner.com/article/deadly-new-bird-flu-strain-adapts-to-human-hosts?
http://www.who.int/influenza/human_animal_interface/influenza_h7n9/RiskAssessment_H7N9_13Apr13.pdf