In this group, 15.2% of those with COVID-19 later died in the hospital, compared to 11.2% of heart attack patients without COVID-19. Among the roughly 4,000 patients who were already hospitalized when the heart attack occurred, 78.5% of those with COVID-19 died, compared to 46.1% of those without COVID-19, according to a report published on Friday in JAMA https://jamanetwork.com/journals/jama/fullarticle/2785893.
Early data on the efficacy of a booster dose of the COVID-19 vaccine from Pfizer Inc and partner BioNTech SE announced by the Israeli Health Ministry and now published in a peer-reviewed journal suggest a sharp reduction in risk of severe infections soon after administration. Pfizer has said that its vaccine's efficacy wanes over time. From late July through late September, when the Delta variant was predominant, researchers tracked more than 1.
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