The US has administered 250 million shots, of which 7 million were J&J. These numbers, and the fact that the mRNA started trials earlier makes me proportionatel

The US has administered 250 million shots, of which 7 million were J&J. These numbers, and the fact that the mRNA started trials earlier makes me proportionately less worried about surprise side effects for the mRNA shots. https://covid.cdc.gov/covid-data-tracker/#vaccinations https://covid.cdc.gov/covid-data-tracker/#vaccinations