lambda research, also lower.cerns not only on how they did in the recent quarter but also against how they will do going forward in the face of a delta variant that seems to be taking a bite out of economic activity. real yields this week are at record lows. caroline: signaling not just inflationary pressures, but growth, the fact that the u.s. has not managed to move the bar significantly in a long term. meaning significant pressure, it's a rate of change as taylor would say when you look at a significantly negative real yield. caroline: i just -- romaine: i just don't think it's good. i mean, we did put a red box on it. it should've been a green box. caroline: that feels do mongering for us. katie, i know that you think this is pretty important, what's happening with negative real yield. did powell pooh-pooh it? >> he did talk about technicals and i felt really validated. he asked directly what you make of the bond market move and he said that there is not a consensus, real yields have gone down and that could

. >> dana: yet another covid variant, researchers say the lambda strain was first detected in paris whichghest pandemic death rate. it is now in at least 30 countries. let's bring in dr. marc siegel, professor of medicine at nyu langone and the fox news contributor. dr. siegel, what to be need to know about the lambda variant? for those of us who are vaccinated, we've been like, "okay, we are fine." but are we find that this one? >> it looks like the news breaking today is we might be fine. this variant emerged in south america. as he said, it's all around south america, 10% of the cases in the united states now, dana. but. biggest issue of what the vaccine does well. it targets several sites on that spike protein. not just one, many. actually a study out of new york university, my own medical center, coming out and about to be published, it absolutely shows that it does respond to the pfizer and moderna vaccines. a little less, not on the order of what we seen before, but it's definitely making the antibodies we need and that's good news. >> dana: the white house is going to have an effo

we have the lambda coming out of peru. nyu researchers doubt that they are resistant.r are we blowing it out of proportion? >> the virus adapts. we better adapt too or it's going to stay had bus. the really good news here is that all of the sound data we have seen shows that the vaccines we are using is working very well against the other variants. there's hardly a new day and out, but the delta variant which is the dominant one here is effectively stopped at least four severe diseases or death. every single person who died in from covid and marilyn last month was not vaccinated. it might not just save your life but someone you love like some one who is older and has health problems. you may not know that your spreading the virus but yet so you could spread and someone could die. vaccination will just be in your body to teach your immune system how to fight your own immune system and then your own immune system will be stronger, primed, and you can avoid not just covid and the deadly disease that causes, but long covid which tens of thousands of americans are suffering

so i mentioned that researchers at nyu found evidence that the delta and lambda variants may evade thejohnson & johnson vaccine might benefit from a booster dose to better protect them from the new variants. you were part of the johnson & johnson two-dose trial. you received a placebo. how concerning is this news for you? how concerned should others be? >> i mean, i do think that it is concerning because there is contradictory evidence here. we had data coming out from johnson & johnson themselves saying that the vaccine, the one-dose vaccine is protective against the delta variant. now we have another study, not your peer reviewed but from a reputable group of researchers saying it may not be very effective. and so i think we're really operating in this gray zone here. we just don't have evidence saying that somebody who got the one-dose johnson & johnson vaccine should get a booster dose. we don't know really what happens, although scientific common sense tells us that the booster dose probably gives you better immunity. we just don't have the data to tell us. so i would say that we