Around 1 BBY, There is a critical malfunction with the Vector star destroyer, and later the virus leaked. Although this biologist, along with his colleagues, sealed and quarantined the lab, the infection spread out and contaminated all the crews on the star destroyer. This biologist was forced to transfer his studies and researches to Bio-Lab 242.
And he thrived the infection for another week.
By the end, as Dr.Cody recorded, the infection killed all aboard the star destroyer, and this unfortunate biologist, is possibly dead. Or he might have escaped using the escape pod. Whatever it is, his fate remained unknown.