A number of recent studies have indicated that people who were vaccinated are more likely to get infected with COVID-19 after a period of time, including Pfizer’s clinical trial in young children (pdf). Some real-world data also show higher rates of infection among the vaccinated. Other research indicates vaccines still provide some protection as time wears on after getting a shot, but the protection does wane considerably. The research all deals with the Omicron variant, which became dominant in late 2021, and its subvariants…. He pointed to data reported by United Kingdom health authorities in March (pdf)—the officials stopped reporting the data after that—pegging people who had received both a primary vaccination series and a booster as having three times the rate of symptomatic infection as unvaccinated people.