What's happened
Guinea-Bissau has not approved a hepatitis B birth-dose trial led by Bandim Health Project researchers. The study, backed by US CDC funding, has been halted after officials denied government authorization. Health authorities and international experts insist newborn vaccination within 24 hours remains the proven standard of care.
What's behind the headline?
Brief
- The latest reporting shows the Guinea-Bissau government has refused to allow the hepatitis B birth-dose trial to proceed, despite external funding from the CDC and private partners.
- World Health Organization and several experts have argued the trial withholds proven care for participants and poses avoidable risk to newborns.
- This update follows public scrutiny of the Bandim Health Project and ongoing investigations in Denmark into the researchers' prior work.
What this means
- Policy and funding dynamics are shaping how and whether external researchers can test vaccines in-country.
- The decision underscores the primacy of local government authorization and adherence to international ethical standards in clinical research.
Forecast
- Guinea-Bissau plans to introduce a birth-dose vaccination by 2028, but implementation remains contingent on resources, infrastructure, and continued international guidance.
How we got here
Guinea-Bissau is planning a 2028 birth-dose rollout but currently lacks resources and infrastructure. The Bandim Health Project, led by Christine Stabell Benn and Peter Aaby, had sought to test a hepatitis B vaccine dose at birth, a proposal criticized as unethical by WHO and many experts. The government’s intervention comes amid broader scrutiny of the researchers’ methods and funding ties.
Our analysis
Ars Technica reports that Guinea-Bissau has formally reaffirmed non-acceptance of the study after police seizures of Bandim Health Project vaccines; The Guardian notes government denials and ethical criticisms; both cite WHO and CDC involvement and the broader debate over birth-dose vaccination and informed consent.
Go deeper
- What are the next steps for the Bandim Health Project in Guinea-Bissau?
- Will Guinea-Bissau still pursue a birth-dose rollout by 2028 given the current objections?
- How might this affect international funding for vaccine research in the region?
More on these topics
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United States Centers for Disease Control and Prevention - Public agency
The Centers for Disease Control and Prevention is a national public health institute in the United States. It is a United States federal agency, under the Department of Health and Human Services, and is headquartered in Atlanta, Georgia.
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Guinea-Bissau - Sovereign state in Western Africa
Guinea-Bissau, officially the Republic of Guinea-Bissau, is a country in West Africa that covers 36,125 square kilometres (13,948 sq mi) with an estimated population of 2,080,000. It borders Senegal to its north and Guinea to its southeast. Guinea-Bissau was once part of the kingdom of Kaabu, as well as part of the Mali Empire. Parts of this kingdom persisted until the 18th century, while a few others had been under some rule by the Portuguese Empire since the 16th century. In the 19th century, it was colonised as Portuguese Guinea. Upon independence, declared in 1973 and recognised in 1974, the name of its capital, Bissau, was added to the country's name to prevent confusion with Guinea (formerly French Guinea). Guinea-Bissau has had a history of political instability: following the bloody but ultimately successful war of independence, the winning PAIGC established a one-party socialist state, which was under military control from 1984 to 1994, when free multiparty elections were held. Several successful military coups have since interrupted peaceful transfer of power, most recently the 2025 coup, which installed the currently ruling military junta, headed by the transitional president...
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Hepatitis B vaccine - Vaccine
Hepatitis B vaccine is a vaccine that prevents hepatitis B. The first dose is recommended within 24 hours of birth with either two or three more doses given after that.
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World Health Organization
The World Health Organization is a specialized agency of the United Nations responsible for international public health. The WHO Constitution, which establishes the agency's governing structure and principles, states its main objective as "the attainment