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>> many people going out to get booster shots because they're concerned about getting omicron and dr. fauci is saying hold on, that might not be enough. take a listen. >> it is conceivable in the future we might need an additional shot. we're hoping we will get a greater degree of durability of protection from the booster shot. we'll take one step at a time. >> take one step at a time. he dangles ideas out there and a few weeks later it becomes a guideline and then a mandate. when is a person vaccinated enough? >> that's a great question. what is enough? is enough when we get to zero risk of i...

Harvard will start their spring 2022 semester online. in atlanta they have reinstated an indoor mask mandate. so much being done to stop the latest wave of covid-19. >> nick, thanks very much. nick valencia reporting. let's get more on all of this. dr. paul burton is joining us the chief medical officer for the drug maker moderna. doctor, thank you so much for joining us. for people who are fully vaccinated and boosted with moderna shots, is it clear exactly how much protection they now have from the new omicron variant? >> wolf, we've produced some lab data this week showing either the 50 mic...

Delta or previous variants, so let's take a look at what moderna announced today. they said that their current booster, the one can you go out and get right now which is 50 micrograms boosted antibodies and 100 antibodies, double the dose, boosted it even further and the effectiveness against omicron sun clear. this is lab data, and it's unclear what this means in the real world. how effective that will be and how long the effectiveness will last. you might see this and say why don't they do the 100 meuc grams. it's signature on the shelves and the president of moderna said that's up to public...

And so the question is, you know, whether or not, which dose is sufficient. one. but also, two, we saw with the larger dose people had adverse effects with that. the other question is how does this translate into clinical outcomes? severe disease, hospitalations, and deaths sf we don't know whether this booster has any impact yet. all we know is lab data showing increase in antibodies. we know the immune system is complicated. there are cells involved. a very sophisticated system. we know they also have memory cells. that may also influence people's long-term outcome and immune response. there...

Important for people to understand we're seeing with these lab stories is that people who are vaccinated and previously infected or fully vaccinated and boosted actually do really well up against omicron, but this is just the lab data. what we're waiting for is real-life data, and we won't have that for several weeks. >> that's such a good point, and i think the distinction between how it works in the real world and how it works in a petri dish -- i don't know if that's what it's in technically. >> right. >> if you know what i'm saying. how bad in your view is it a sign that states are enlisti...