RFK Jr.-Backed Hepatitis B Vaccine Trial in Africa Canceled After International Backlash

A hepatitis B vaccine trial on newborns in Guinea-Bissau, backed by the United States and championed by Health Secretary Robert F. Kennedy Jr., has been canceled after an international outcry. The cancellation is the common thread running through a cluster of headlines published around October 22, 2026, from Rolling Stone, Ars Technica, The Guardian, MS NOW and The Hill.

The headlines themselves are the only material available here, so the outline is thin. Ars Technica reports that the trial was a US-backed vaccine study involving babies, and that it was called off after backlash that crossed borders. Rolling Stone describes the study as controversial and says Kennedy championed it.

The Guardian carries a further development. Its headline says police in Guinea-Bissau raided what it calls Kennedy's 'deities of vaccine research.' The phrase appears to refer to researchers tied to the work. The headlines do not say who was searched, what officers were looking for, when the raid happened, or whether anyone was detained or charged. Those details are not in the material.

The political response is already underway in Washington. The Hill reports that House Democrats are demanding answers from the Centers for Disease Control and Prevention about the African hepatitis B study. The headline does not say what questions were posed, how many lawmakers signed on, or what deadline they set for a reply.

An opinion piece on MS NOW takes a clear side. Its headline argues that Kennedy's push for what it calls an anti-vaccine experiment on African babies was never a good idea. That is a viewpoint, not a finding, and it should be read as one. It does show how the criticism was framed: as a question of whether infants in a low-income African country were being asked to carry the risk of a study that critics saw as ethically unsound.

What the headlines do not settle is considerable. They do not give the trial's size, its design, its funding amount, who approved it, or exactly who decided to cancel it. They also do not say whether the Guinea-Bissau government, the US government or the researchers themselves made that decision, nor whether the raid was connected to the cancellation.

What comes next is also visible only in outline. The CDC will have to decide how to answer congressional questions. The Guinea-Bissau raid may lead to formal charges or may not. And the cancellation could shape how the United States designs and defends vaccine research conducted abroad. Fuller reporting from the outlets named above is where those answers would appear.