Explanation about different strains?

I’ve seen occasional references to different strains of Covid being different in seriousness, and that a European strain was more serious than a Chinese strain?

But I thought it all came from China?

Can anyone elaborate?


Viruses mutate, that’s what they do. An analog would be that humans all came from Africa, but various mutations accumulated in numerous areas to lead to populations with different characteristics.

Currently, there are six strains of coronavirus. The original one is the L strain, that appeared in Wuhan in December 2019. Its first mutation – the S strain – appeared at the beginning of 2020, while, since mid-January 2020, we have had strains V and G. To date strain G is the most widespread: it mutated into strains GR and GH at the end of February 2020.