language around what it means to be fully vaccinated, jake. >> but they haven't done it yet, not officially. thanks omar jimenez. joining us, dr. sanjay gupta. let's start with these three new reports showing boosters offer the best protection against hospitalization and severe illness from the omicron variant. what are the most important takeaways for you tremendous th from these studies? >> i think there's been conjecture around this. first of all, when it comes to cases, i'll show you hospitalizations in a second. when it comes to cases, they compared unvaccinated to fully vaccinated to boosted. people who got three shots. and you can see the difference there. i point out, something you and i have talked about. the biggest difference is between vaccinated and fully vaccinated but you get a benefit from obviously having been boosted as well. those are cases. let me show you hospitalizations quickly. as you look at hospitalizations, one thing to keep in mind is they make a distinction here between when you receive the shots.