reported. i've talked to health departments in the last several days where they are weeks behind in reporting cases. a daily case count means low. what we need to focus on and what we're getting on in terms of seriousness, how many people are hospitalized, particularly are requirements for oxygen. that's going to be a lagging indicator, meaning seven to ten days offset from the cases themselves. it's going to be the best measure we have. right now, that's what people like myself are tracking is what's happening with hospitalizations, and as you see, we've now got over 100,000 hospitalizations here in the country. it's rising rapidly. that says this is a really important issue, and that while there may be many many more omicron cases of which many are mild, the sheer number of cases means even if a smaller percentage are severely ill, they're still going to be potentially more of them than we saw with delta, and that surely will challenge our health care systems. >> let me ask you about what's happening in israel, they're now offering a fourth vaccine shot to those 60 and older.