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reader comments 31 with 29 posters participating Share this story The new bivalent COVID-19 booster spurred neutralizing antibody levels that were fourfold higher against the omicron subvariants BA.4/BA.5 in older adults than those seen after the original booster, Pfizer reported Friday. The new data may help calm concerns about whether the updated booster is an ..

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Enlarge / A man receives an H1N1 nasal flu spray vaccine at an urgent care center on October 16, 2009, in Lake Worth, Florida. reader comments 87 with 54 posters participating Share this story The nasal version of the Oxford/AstraZeneca COVID-19 vaccine failed an early-stage clinical trial, dashing hopes for better infection prevention and forcing ..

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Enlarge / A COVID-19 testing tent stands in Times Square on April 27, 2022, in New York City. reader comments 233 with 115 posters participating Share this story Enduring an initial omicron infection may not spare you from omicron’s subvariants, according to preliminary data from South Africa. The country is currently at the start of ..

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Enlarge / A child arrives at an elementary school vaccination site for children ages 5 to 11 in Miami in November 2021. reader comments 150 with 78 posters participating Share this story At least 75 percent of US children have now been infected with the pandemic coronavirus, up from roughly 44 percent before the omicron ..

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Enlarge / The Comirnaty (Pfizer/BioNTech) and Moderna COVID-19 vaccines. reader comments 139 with 92 posters participating Share this story Covid-19 Coverage View more stories The mRNA-based COVID-19 vaccines made by Pfizer/BioNTech and Moderna have proven highly effective at priming our immune systems to fight the pandemic coronavirus—preventing substantial amounts of infection, severe disease, and death ..

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Enlarge / A 13-year-old celebrates getting the Pfizer-BioNTech COVID-19 vaccine in Hartford, Connecticut, on May 13, 2021. reader comments 255 with 123 posters participating Share this story Covid-19 Coverage View more stories So-called “natural immunity” against COVID-19 has always been a dodgy argument for avoiding vaccination during the pandemic. But amid omicron, natural immunity is ..

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Enlarge / Blood samples for COVID-19 antibody testing. reader comments 73 with 48 posters participating Share this story Covid-19 Coverage View more stories An estimated 140 million people in the US—around 43 percent—have had COVID-19, according to the latest analysis by the Centers for Disease Control and Prevention using data from the end of January. ..

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Enlarge / Pedestrians walk in front of a COVID-19 vaccination site in Brooklyn, New York, on Nov. 19, 2021. reader comments 60 with 43 posters participating Share this story Covid-19 Coverage View more stories The first batch of preliminary laboratory data on the omicron coronavirus variant has come out, and the results are largely what ..

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Enlarge / Dr. Silvia Gelvez gestures after receiving a dose of the Pfizer-BioNTech vaccine against COVID-19, at Colombia University Clinic in Bogota on February 18, 2021. reader comments 664 with 216 posters participating Share this story Covid-19 Coverage View more stories As long as there have been vaccines against COVID-19, there have been arguments for ..

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Enlarge / A phlebotomist draws blood meant for antibody testing. reader comments 130 with 80 posters participating Share this story We’ve tended to treat the RNA-based vaccines from Moderna and Pfizer/BioNTech as functionally equivalent. They take an identical approach to producing immunity and have a very similar set of ingredients. Clinical trial data suggested they ..

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