Judicial police in Guinea-Bissau raided the offices of vaccine researchers and seized doses of hepatitis B vaccine. These researchers have been central to a controversy surrounding research conducted on African newborns. The research, funded with $3.2 million from the US Centers for Disease Control and Prevention, the Pershing Square Foundation, and the Bluebell Foundation, has drawn scrutiny. Robert F Kennedy Jr, the US Department of Health and Human Services secretary, has previously praised the work of these researchers. The raid follows an ongoing dispute regarding the practices and ethics of the research. Officials announced the seizure on Facebook, indicating a formal investigation is underway in Guinea-Bissau. Further details regarding the allegations and the status of the research are pending.