vin gupta, an affiliate assistant professor at the institute for health metrics and evaluation and anmedical contributor. obviously we know the cdc still has to recommend this. they're going to have an advisory committee meeting in june. how significant is this, and if it is, in fact, approved, how soon could we see this go into people's arms? >> well, lindsey, good afternoon, this is huge news and for all of your viewers out there, this has been a goal that we've been seeking for decades. i know this is all converging with the pandemic, the flu season, the tridemic over the last several months leading into the beginning of 2023, but this has been a goal that scientists have been working at for over -- since the 1970s, frankly, and just to clarify it, this type of vaccine, lindsey, is very similar to vaccines like the pneumococcal vaccine, folks over 65 often will get that vaccine to protect themselves against a different type of pneumonia. the meningitis vaccine, very similar technology, technology that has existed for a very long time. but glaxosmithkline was able to unlock a really