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This variant than we've seen in other viruses. some of those mutations are in regions of the virus that may impact transmissiblity and how they react with this virus. it's really important not to get too excited about just the sequence data. we have to verify that in lab studies and i know there are labs around the world that are looking at antibodies that are induced from our vaccines to see how they neutralize or halt this virus. we're looking at models and other data to see if these mutations would impact the transmissibility of the virus. you know, what's interesting some mutations, ali, w...

The new variant in south africa is markedly different as we heard from the top of the show because it carries an unusual marker. sonoma county spoke with cardiologist about what sort of dangers this new variant could cause. take a listen. >> the big question now is will our immune response from vaccines or prior infections be blunted by this variant. if it proves to be one that interferes with our immune response, that isn't clear yet. those are the lab studies that have to be done in the days ahead. and so we're grateful to the south african scientists who are on this. but the main thing here...

In the lab studies show vaccines may have certain mutations similar to the south african variant in the uk variant that makes vaccines a little bit weak and also shows potentially the monoclonal antibodies as we have may not be as effective but it is important to note this is only in the lab. we do not have evidence this is true in the real world, we don't have clinical evidence to show this, only the lab. sometimes what we see and do in the lab does not translate into the real world which is a good situation here. todd: based on your first two answers i get the impression experts are not that...

That variant a variant of interest and lab studies show it has the potential to be resistant to vaccines, although real world studies need to be conducted to confirm those findings. hallie? >> erin mclaughlin reporting in los angeles. dr. mercedes carnifhan of northwestern university feinberg school of medicine. thank you for being with us. good morning. >> thank you, hallie. i appreciate the invitation. >> of course, there's a whole bunch of topics to talk to you about today. president biden will address this later this week, that information just coming in to us. we know that only 53% of the...

Place in the country. >> these covid variants follow the greek alphabet as you know, so the delta variant, and now the new mu variant, and how concerned should we be about that one? vaccine resistant, and what is known about it? >> okay. well, this is a variant of concern as labeled by the world health organization because it has some mutations that could potentially indicate some evasion of the immune response from vaccines, and also, you know, it could be more transmissible. now we have to remember that these data from the lab studies right now, and so we don't have enough data to say, liste...