What in the world? Really? My understanding is that Booster shots are extremely effective at further preventing the spread of Covid. Indeed, the first result I

What in the world? Really? My understanding is that Booster shots are extremely effective at further preventing the spread of Covid. Indeed, the first result I get when searching "covid booster effectiveness" says that booster shots reduce infections by a factor of 11: https://www.cidrap.umn.edu/news-perspective/2021/09/studies-show-good-covid-booster-effect-waning-2nd-dose-protection https://www.cidrap.umn.edu/news-perspective/2021/09/studies-... And if you don't get infected, you can't spread it. So there should be a big public health benefit to giving boosters to as many people as possible. Am I misunderstanding something, or was the reasoning behind the recommendation stupid?