Transcripts for KPIX CBS Evening News with Jeff Glor 2018030

>> glor: the f.d.a. today chose the four strains of the flu that will be targeted in the vaccine for next season. the four strains of the flu that will be targeted in the vaccine for next season. but scientists at the national institutes of health are looking far beyond next year as they try to develop a universal flu vaccine. here is our chief memory correspondent dr. jon lapook. >> reporter: it's the same problem each year: making a vaccine against a flu virus is like trying to hit a moving target. >> it changes. it mutates just enough to get it s t of the range of the vaccine. >> reporter: dr. anthony fauci eaads up vaccine research at the national institutes of health. he says we need a brand-new approach. >> we've been using this technology of inactivated virus that you grow in chicken eggs since the 1940s. this is antiquated. >> reporter: in the six to seven months it usually takes to create the vaccine using eggs, the virus can dramatically change. the solution: a universal flu vaccine that would protect against multiple strains of the

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