Health minister says government ‘did not authorize’ Danish-led hepatitis B trial in babies backed by RFK Jr

Guinea-Bissau has not approved the controversial hepatitis B study in newborns that would be funded by the US government and private partners, the African country’s minister of health said on Tuesday.

The study, which would not investigate the safety or effectiveness of vaccines but would instead track “nonspecific” health outcomes like overall mortality or neurodevelopmental conditions, has been championed by Robert F Kennedy Jr, secretary of the US Department of Health and Human Services (HHS) and a longtime anti-vaccine activist.

Recommended dose of hepatitis B vaccine will be withheld from thousands of newborns by Danish researchers

A controversial research trial that will withhold hepatitis B vaccines from some African newborns was given approval to move forward this week.

It is a central part of the vaccine vision for Robert F Kennedy Jr, the secretary of the US Department of Health and Human Services (HHS) and a longtime vaccine opponent.

This article was amended on 13 October 2026. A previous version said CIDRAP first reported news that the research trial was approved by the Denmark ethics committee. Rolling Stone had actually reported the news first.

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