Guinea-Bissau approves trial withholding hepatitis B vaccine from newborns

Danish researchers received approval to conduct a trial in Guinea-Bissau that withholds the recommended hepatitis B vaccine dose from thousands of newborns, a study championed by US HHS Secretary RFK Jr. The trial's ethics and safety are disputed, and its approval signals potential policy influence by vaccine-skeptic leadership. This matters as it could set a precedent for vaccine research standards in low-income settings.