plus a variant has been in existence for some couple of months now in the uk. and the thing about this is like all viruses, delta, the coronavirus knew takes. the reason that these viruses exist is to survive. and they survived by mutating. right now, the delta variant plus is the one that's of concern. and it is about 10% of the cases in the uk, and of the country. and we see a smothering of it in the u.s. even as well. the thing that would make us really set up and pay attention, brian, is that this variant, or other variants would either significantly more infectious than the form that it previously existed in. or it's more dangerous medically. or it is more resistant to treatments and to vaccines. so far, the delta plus we variant, brian, is a little bit