In a paper published in the May 17, 2024, online issue of Cell, investigators from the Duke Human Vaccine Institute reported that a sequence of three immunizations in the HVTN-133 trial was sufficient for the development of heterologous or broadly neutralizing antibodies (bnAbs) that protected against several strains of HIV. The findings are “a real beachhead,” Barton Haynes told BioWorld. Haynes is the director of the Duke Human Vaccine Institute and the senior author of the paper.