(STAT News) – To put these developments in perspective, STAT turned to Dutch virologist Ron Fouchier, a leading expert on H5N1, for his assessment of these latest twists in the H5 saga. Fouchier, who studies avian influenza at the Erasmus Medical Center in Rotterdam, was at the center of a controversy about H5N1 in 2012, when a U.S. scientific advisory group moved to restrict publication of research he and a team at the University of Wisconsin-Madison had done — separately — to see what mutations would be needed for the virus to be able to spread efficiently among people, so-called gain of function research. (Read More)