A new analysis published in Cell shows that the adenovirus vector vaccine made by J&J, and some others might have been better than the Pfizer, mRNA vaccine.
Both were developed under Operation Warp Speed under Trump.
One was favored and pushed by Biden.
https://www.cell.com/iscience/pdf/S2589-0042(23)00810-6.pdf
https://twitter.com/moxlosllc/status/1655940293575987200?s=46&t=Y4fVsDnz2q8uZ3VNKeco4A