RFK Jr. singled out one study to cut funds for global vaccines. Is that study valid?

A child receives the DPT vaccine, which protects against diphtheria, tetanus and pertussis, three potentially fatal diseases. A 2017 study assessing this vaccine was cited by RFK Jr. when he announced that the U.S. will halt its funding of Gavi, the Vaccine Alliance, because of concerns about vaccine safety. Vaccine specialists question the validity of the study that he mentioned.

When RFK Jr. announced he would cut funds from Gavi, the Vaccine Alliance, he cited "vaccine safety," referring to a 2017 study from Guinea-Bissau. We asked vaccine researchers to assess the study.

(Image credit: Noah Seelam/AFP)