How do you (they) know this? I have heard the top docs say it IS helpful against new variants.
I went back a week in my history trying to find the paper. I stumbled across it while researching ivermectin studies, and I can't find it again.
"Helpful" in this context depends how you want to define it. I mean 50.00001 is still greater than 50.
But is it as "helpful" as it was on the prior variant? No.