Really interesting reporting from Helen Branswell on the question of why, if H5N1 is such a feared strain of flu, most cases so far are just pink eye. Lots of hypotheses, no solid answers yet.
Scientists confront a mystery: Why have U.S. bird flu cases been so mild?
The H5N1 bird flu outbreak in the U.S. has so far been shockingly mild. Researchers have some theories as to why.
statnews.com