Why we don't have a Pi variant yet—even after so much Omicron 📝: Jamie_Ducharme
, and, most recently, BA.2.75. Why all these complex names when there’s still no variant known as Pi?
While there are differences between BA.2, BA.4, BA.5, and the rest of the Omicron subvariants, they’re all fairly similar to each other and the original Omicron strain. That’s why they’re considered descendants of Omicron rather than their own distinct variants with different Greek names to match, Van Kerkhove says.
The evolutionary jump from Delta to Omicron was large, and the virus may not change that dramatically again for years—if ever, Bedford says. So, in his opinion, there should be a lower bar for assigning new alphabetical names.than the original Omicron strain, he points out, which was a meaningful shift. BA.5, our current tormentor in the U.S., seems to be the most contagious yet.
Van Kerkhove stresses that the WHO still considers and treats Omicron relatives as variants of concern, even if they haven’t been assigned new names.
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