Researchers identified a class of potent cross‑neutralizing antibodies that neutralize Marburg virus and the related Ravn virus, according to a report in npj Viruses. The study maps epitopes on viral glycoproteins and demonstrates neutralization breadth across divergent filoviruses, supporting antibody‑based therapeutic and prophylactic strategies for outbreak response. Authors emphasize the antibodies’ potential for development into broad‑spectrum therapeutics or templates for vaccine design. For readers: cross‑neutralizing antibodies bind conserved viral regions shared across related species, offering broader protection than strain‑specific antibodies.