PSA: Superspreaders continue to be a thing.
published in March 2021, researchers looked at 58 studies that assessed rapid antigen test accuracy. On average, rapid antigen tests correctly identified COVID-19 infections 72% of the time—but that was just in people experiencing noticeable symptoms. For people without symptoms, the tests correctly identified 58% of people with COVID-19.Centers for Disease Control and Prevention
explains, recent data suggest the vaccine’s ability to prevent infection in frontline health care workers has diminished over time. “This lower effectiveness is likely due to the combination of decreasing protection as time passes since getting vaccinated, as well as the greater infectiousness of the delta variant,” the CDC explains.
Clinical trials suggest that boosters help improve immune response against the coronavirus. “With an increased immune response, people should have improved protection against COVID-19, including the delta variant,” theBut “improved” still doesn’t make us virus-proof. “COVID-19 vaccines are effective at preventing most infections. However, like other vaccines, they are not 100% effective,” the
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