Can Immunity Induced by the Human Influenza Virus N1 Neuraminidase Provide Some Protection from Avian Influenza H5N1 Viruses?

Abstract
Gillim-Ross and Subbarao discuss a new study inPLoS Medicine that suggests that immunity to the human influenza virus N1 NA cross-reacts with the avian N1 NA, and that this cross-reactivity may be sufficient to protect against infection with avian influenza virus H5N1.