The Denobulan Medical Database was a collection of known diseases maintained by the Denobulans during the mid-22nd century. In 2154, Doctor Phlox used the Denobulan medical database to search for any reference to a silicon based virus which had infected Commander Tucker and Ensign Hoshi Sato. He was unsuccessful and had to work on devising a cure without the help of prior research. (ENT: "Observer Effect")