Danish researchers to withhold hepatitis B vaccine from newborns in Guinea-Bissau trial
Story essentials
Danish researchers (Peter Aaby, Christine Stabell Benn), US CDC, Guinea-Bissau health officials
Guinea-Bissau
October 2026
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COMPAMIR Editorial Team
The COMPAMIR editorial team brings together public reporting and links to the original coverage. We update the page as new information emerges.
Read our editorial policy- Earlier version 110/10/2026, 10:20:57 AM
Danish researchers received approval to conduct a trial in Guinea-Bissau withholding hepatitis B vaccines from 14,000 newborns. The study is supported by the US CDC and private foundations, despite significant ethical concerns regarding the risk of infection. Critics argue the trial is unethical as it intentionally exposes infants to the risk of contracting hepatitis B.
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