Since you asked about double blind randomized placebo controlled studies (which are only one kind of useful scientific study when it comes to vaccines): Safety and immunogenicity of the SARS-CoV-2 BNT162b1 mRNA vaccine in younger and older Chinese adults: a randomized, placebo-controlled, double-blind phase 1 study. Immunogenicity, durability, and safety of an mRNA and three platform-based COVID-19 vaccines as a third dose following two doses of CoronaVac in China: A randomised, double-blinded, placebo-controlled, phase 2 trial. Immunogenicity and safety of a recombinant adenovirus type-5-vectored COVID-19 vaccine in healthy adults aged 18 years or older: a randomised, double-blind, placebo-controlled, phase 2 trial. There are a lot more if do a quick search. At least now you and unLaced can stop saying there is no evidence that mRNA vaccines are safe and effective.
Based on comments I'd say he flunked out long before getting an associates. His ignorance suggests he barely made it more than a couple of weeks into Biology 101. Definitely a Google University candidate though (with double major in YouTube conspiracy theory).
Hey you were the one who fell for the safe and effective bullshit. Not me. Sounds like you need a credit in Critical Thinking 101. See, taking the mRNA stabbing was an IQ test. You failed. Now you keep going back to the prof looking for extra marks.
As Lizzy can't risk answering and be exposed she just takes snippets from before and repeats them. Its an evasion trick even a small mind can employ. Speaking of fat broad frauds... Brain very tired. I will have to work out of this is somebody's idea of an ethical scam tomorrow https://babymute.com/