[SeekAndFind]

The information on J&J's vaccine comes from a press release, while data on Moderna and Pfizer's shots is based on what the companies submitted to the US Food and Drug Administration for emergency use authorization. J&J said it plans to submit its data to the FDA next week to request an EUA, which would green-light the vaccine for use in adults across the US.

How well the shots prevent illnesses:

Moderna: 94.1% effective at preventing symptomatic infections, 100% effective at preventing severe infections, after two doses.

Pfizer: 95% effective at preventing symptomatic infections, nearly 100% effective at preventing severe infections (only 1 case among more than 18,000 vaccinated individuals in the trials), after two doses.

Johnson & Johnson: 66% effective at preventing moderate to severe infections, 85% effective at preventing severe infections, after a single dose.

Note: A J&J executive said its shot may have shown a lower level of efficacy because it was tested at a time when higher levels of the virus, including variants that may evade vaccines, were circulating.

[Paladin2]

What happens if an individual takes more than one course of inoculations, especially different formulations?

[aMorePerfectUnion]

Reproducibility is the cornerstone of the scientific method.

Have any of these results been independently reproduced??

[PIF]

Note: the J&J vaccine is made the old fashioned way with no mRNA modifications.