(from the Source article):" In late February, researchers from the Harbin Veterinary Institute said in a report published in the academic journal Science China Life Sciences
that they had documented a milder but harder-to-detect mutation of the virus."
Regarding the Swine flu in China, is that a "Glitch" or a "Feature" (?) ,
or is this a precursor for viral "gain of function" for human viral infections ?