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Omicron Breakthrough Cases Boost Protection, Studies Say

Vaccinated people who have a breakthrough case of Omicron will have better protection against COVID-19 variants than vaccinated people who receive a booster shot, two new studies show. The University of Washington, working with Vir Biotechnology of San Francisco, looked at blood samples of vaccinated people who had breakthrough cases of […]

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CDC data suggest Pfizer vaccine protection holds up in kids 5-11, raising questions on earlier study

Does the Pfizer-BioNTech Covid-19 vaccine provide less protection to children aged 5 to 11 than to adolescents 12 to 17? A study from New York state released Monday suggests that’s the case. But new data from 10 states released Tuesday tell a different story. The data, published by the Centers for Disease Control […]

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Moderna’s Case for a COVID-19 Booster Shot: Its Vaccine Protection Wanes by 36% After 12 Months, According to a New Study

Studies from COVID-19 vaccine makers and public health officials have been suggesting for a while that protection provided by the vaccines wanes over time. In a new study published on Sept. 15 to a preprint server—the study is not yet peer-reviewed—researchers at Moderna, which makes one of the two mRNA COVID-19 […]

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