You seem to have forgotten that all the Democrats said they’d never take a vaccine that was approved by Trump, back in 2020. There are two assumptions following that: that they actually did, and that they substituted something else that was approved by Biden—and it was indeed Biden’s approved vaccine that went into the public with the emergency authorizations.
On December 11, 2020, while Trump was still the president, the U.S. Food and Drug Administration issued the first emergency use authorization (EUA) for a COVID vaccine. Specifically, the Pfizer-BioNTech COVID-19 Vaccine.
On December 18, 2020, while Trump was still president, the U.S. Food and Drug Administration issued the second emergency use authorization (EUA) for a COVID vaccine. Specifically, the Moderna COVID-19 Vaccine.
So actually it was “indeed” Trump’s “approved vaccine that went into (sic)the public (sic) with the emergency (sic) authorization.”