Some of you have mentioned S and L-strain
so I made a search and found this article
Quote:
The differences between the two identified strains are tiny. In fact, they can’t really be considered to be separate “strains”, says Jones. And many of the genetic differences won’t affect the production of proteins, and so won’t change the way the virus works, or the symptoms it causes, he says. One is not more deadly than the other.
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https://www.newscientist.com/article...e-more-deadly/
Markus