Assisted by Julian Bashir and Miles O'Brien, Nydrom and several Kellerun scientists joined in a joint effort to destroy the deadly bio-weapons. After many futile attempts, they were able to accomplish their mission.
After their success, Nydrom and the other scientists who worked on the project were killed by the Kellerun and T'Lani governments because they did not want the technical knowledge of the Harvesters to survive. Bashir and O'Brien were able to escape. (DS9: "Armageddon Game")