It's being written about a lot this week. My reading is that the FDA is stalling on approval for Moderna's vaccine because Pfizer (5th biggest lobbyist/donor in U.S. politics) is still working on their dosage for children and doesn't want them to have an unfair lead. FDA gives other reasons, which make very little sense. I've learned that when the official reason doesn't make any sense, there's an ulterior and unethical reason that does.