Covid-19 vaccines were originally designed for a version of the virus that no longer exists
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Vaccine makers should stop including the original SARS-CoV-2 coronavirus spike protein in covid-19 booster shots to make them more effective against current variants, a study of antibody responses has concluded.
The first covid-19 vaccines were based on a SARS-CoV-2 genome sequence from Wuhan, China, released on January 11, 2020. From there, researchers determined the sequence of the spike protein on the outside of the virus and began creating vaccines based on it. Modern …