US-funded hepatitis B trial in Guinea-Bissau is unethical: WHO

The WHO criticized a U.S.-funded hepatitis B vaccine trial in Guinea-Bissau as unethical, raising concerns about exposing infants to harm by delaying vaccination. The trial, involving 14,000 newborns, faced backlash amid local outrage over its methods. Following the WHO's intervention, the Guinea-Bissau government suspended the study.