I heard a dr. on CNN this morning say the virus hasn ‘t mutated since discovered in 1976.
http://www.ncbi.nlm.nih.gov/pubmed/24860690
Untrue.
It’s drifting vs. time.
Look at the 5th chart on that link.
Yeah, there is something about the virus that makes it less prone to mutations.
At least that is what I read, and it’s real virologist speak so I can’t begin to describe it.