Why's that? I've done some homework on this, perhaps not as much as you so I'd be interested in learning what you know.
I did find this on WebMD which shows the J&J has had no serious side effects and no serious anaphylaxis reactions vs. Pfizer & Moderna which have. What can you share?
I received the first Modena shot 3 weeks ago. Just a sore arm and a bump for a week. Next shot next week. Wifey gets the second tomorrow, so we will see how she handles it.