Researchers reported discovery of potent cross‑neutralizing antibodies that target both Marburg virus and the related Ravn virus, with findings published in npj Viruses. The antibodies bind conserved viral epitopes, neutralize multiple strains in vitro, and show potential as therapeutic candidates or templates for broadly protective vaccines. The study names specific monoclonal clones and maps their neutralization profiles, offering a pathway to counter high‑consequence filoviruses where few licensed options exist. Cross‑neutralization indicates conserved vulnerability that can be exploited in countermeasure design.