![]() Some epidemiologists and state health officials instead recommend comparing how likely a vaccinated person was to be hospitalized or to die, compared with an unvaccinated person. Imagine a state where just two people are hospitalized but both are vaccinated - breakthroughs would account for 100 percent of the hospitalizations in that state, even though these cases were very rare. In a state with a high vaccination rate, a higher percentage of breakthroughs may simply reflect that fully vaccinated people are a bigger chunk of the population, or that there are few hospitalizations and deaths overall. This may seem counterintuitive, so it’s important to understand why. Looking at how many hospitalizations and deaths have involved fully vaccinated people is a common but crude measure of how well the vaccines are working.Īs more people get shots, the percentage of hospitalizations and deaths among fully vaccinated people should rise. Only about 50 percent of people in the United States are fully vaccinated. But last week, the agency noted that those figures did not reflect new data involving the Delta variant and said it was actively working to update them. ![]() Until recently, the Centers for Disease Control and Prevention estimated that fully vaccinated people accounted for less than 3 percent of coronavirus hospitalizations nationwide and less than 1 percent of virus deaths. ![]() Data was not available for several states in which the virus has been surging, including Florida and Missouri. Note: Arkansas did not provide counts of breakthrough hospitalizations or deaths, and West Virginia did not provide a count of breakthrough hospitalizations.ĭata on less serious breakthrough infections is not widely available, though it is possible those cases are rising. ![]()
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