For a salvage title from theft combined with a biohazard flag, can I get more detail on what actually happened?

Auction platforms typically won't have — or won't disclose — specific incident narratives behind these flags, since the data comes from the original insurer's claim coding rather than a written report available to buyers. "Theft" as a loss type simply means the vehicle was reported stolen and later recovered, often with related damage from how it was treated while missing. A "Biohazard" flag means a contamination concern was identified (commonly bodily fluids) requiring remediation before resale, not necessarily that something occurred inside the specific vehicle you're viewing versus standard handling protocol for that loss category.