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Guinea-Bissau suspends Trump-backed hepatitis B vaccine study for ethical review

Guinea-Bissau halted a $1.6 million U.S.-funded hepatitis B vaccine trial due to ethical concerns and lack of technical resources, pending a national review.

  • Guinea-Bissau is suspending a Trump administration-backed hepatitis B vaccine study on newborns, pending an ethical review.
  • The study is designed as a randomized controlled trial, with some infants given the hepatitis B vaccine at birth and others not.
  • Some experts have suggested that the research plan is unethical, because it will withhold vaccines that work from newborns at significant risk of infection.
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This is still the biggest blur that surrounds a highly controversial clinical trial in Guinea-Bissau. Conducted by a Danish team and funded by the United States, the study focuses on 14,000 newborns: half of them receive a hepatitis B vaccine from birth, and the other has to wait six weeks. A practice that is highly critical in a country where nearly 20% of the population is carrying the virus.

·Paris, France
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Guinea-Bissau suspends Trump-backed hepatitis B vaccine study for ethical review

Guinea-Bissau's health minister says the government is suspending a Trump administration-backed hepatitis B vaccine study on newborns in the West African country pending an ethical review.

·United States
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Premium Times Nigeria broke the news in Abuja, Nigeria on Monday, January 19, 2026.
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