The updated Moderna vaccine was tested in human trials and the Pfizer shot was tested in mice. Earlier versions of both vaccines have been tested in human trials.
On Sept. 11, the Food and Drug Administration (FDA) approved updated mRNA COVID-19 vaccines. These new vaccines target the XBB.1.5 sublineage of COVID-19, from which all of the currently circulating strains descend. A day later, the Centers for Disease Control and Prevention (CDC) issued a recommendation for all people 6 months and older to get the vaccine.
In a Sept. 13 roundtable, Florida Surgeon General Joseph Ladapo claimed that the recently approved vaccines lacked testing, and added that CDC advice that vaccination is still the best…
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