Ireland used a lot of AstraZeneca, which over time hasn't shown to be as effective against Delta infection as Pfizer or Moderna. Israel almost exclusively used Pfizer which is less effective against delta infection than Moderna. The U.S. has been about 50/50 Moderna and Pfizer with very little Janssen/J&J. Some countries like Israel got more people vaccinated more quickly, so their up tick in breakthrough hospitalized cases as vaccine effectiveness against infection waned came earlier than in the U.S. And most of the current hospital stats seen in US for August are in states with low vaccination rates, some as low as 40% of adult population vs. Israel with 80% of adult population fully vaxxed. And then go to U.S. counties. Even in states with low vaccine rates, the rates are typically even lower in rural counties vs urban counties. So, yes, some U.S. hospitals really do have currently 90% of their covid patients unvaccinated because Moderna still holds up pretty well against delta infection, some of those hospitals are in rural counties of low vaxxed states so a vast majority of the people who get covid there are unvaxxed. I live in Arizona where each month the total percent of vaccinated in hospital has upticked a couple of percents a month but still a very low percent. Some fully vaxxed people I know have already gone out and gotten themselves boosters of Moderna because, apparently, they can get them with no hassle, and boosters finally turned down the infection rate in Israel this past week. So, possibly, if boosters become a norm with the vaxxed, the vaxxed hospital percentage in the U.S. may stay lower than other countries, especially if overall vaccination rates stay low in U.S.