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Considering any new vaccine requirements or efforts to try to get more americans vaccinated? you said that is the key to protecting against omicron. is there anything you are going to do? >> i will be talking about that on thursday. >> today came work that the omicron strain may have been detected in europe days before any other travel restrictions were imposed. the emergence of this new variant is also raising questions about the protection we get from our existing vaccines, prompting this from dr. fauci. >> vaccines, and particularly boosters, give a level of antibody that even with variants...

>> i will be talking about that on thursday. >> today became word that the omicron strain may have been detected in europe days before any other travel restrictions were imposed. the emergence of this new variant is also raising questions about the protection we get from our existing vaccines prompting this from doctor fauci. >> vaccines, particularly boosters, give a level of antibodies that even with variants like delta, give you a degree of cross protection. particularly against to be exceed. >> moderna ceo was among those suggesting today that the current vaccine may be less effective in b...

Three-doze vaccine and you need that third immunization to get a 30 to 40-field rise increase in your virus neutralizing antibodies and more durable protection. >> what if the mrna vaccines don't work against omicron? >> let's take the first staple. the fact is you need this for the delta variant. right know overwhelmingly the delta variant is the most imminent threat in the united states. we're about to go through a third wave. in addition, that third immunization is -- that big bump in virus neutralizing antibodies will make it more likely that you'll get cross-protection to the omicron vari...

This variant here in the u.s. and as you mentioned today dr. fauci saying that confirmed cases of this variant now in 20 countries, 226 confirmed cases. but he also stressed the importance of vaccines and boosters, even if it turns out that there may be less protection from them going up against this variant. take a listen to some of what he had to say there. >> as with other variants, although partial immune escape may occur, vaccines and particularly boosters give a level of antibody that even with variants like delta give you a degree of cross-protection, particularly against severe disease...

So, we must urge and encourage everyone who's eligible for the vaccine to receive it. the other is, by getting boosters and vaccines, we think that our current vaccines — this is my hope, as we say in the us, my "fingers are crossed" — our current vaccines will have some cross—protection against omicron. we'll have to see how much of that there is. in the event that we do need another vaccine, the manufacturers can create of course, one that might be ready sometime in 2022. one more development to bring you on the covid—i9 pandemic — china says it will donate one billion additional v...