https://x.com/AaronSiriSG/status/1968737710992248836
Aaron Siri:
"Outrage alert: HepB vaccine for children licensed based on 5 days of safety monitoring while at least 21 days of monitoring would be required to license this vaccine for chickens!
See USDA guidance for licensing vaccines for chickens: "Daily observation records are required for at least 21 days after vaccination." https://aphis.usda.gov/sites/default/files/memo_800_204.pdf
See FDA licensure of HepB vaccine: