A Danish Couple’s Maverick African Research Finds Its Moment in RFK Jr.’s Vaccine Policy

A Danish team’s controversial Guinea-Bissau vaccine research claims some vaccines may affect overall child survival, with effects varying by sex and vaccine type.

Many experts say the methods are weak and the findings are not reliably reproducible, keeping the science highly disputed.

The study has resurfaced in US politics after RFK Jr. and the Trump administration cited it to justify cuts and freezes to Gavi funding.

Denmark is now reviewing the work, and a formal investigation has been opened amid renewed scrutiny.

The debate could shape vaccine policy and threaten child immunization efforts in low-income countries.