Hawaii plans to bolster its pandemic flu defenses by developing a data management system that will correlate a wide range of related information, said Dr. Paul Effler, the state's epidemiologist. Last month, Gov. Linda Lingle said she planned to add $15 million to the state's budget next year to help prepare for a possible pandemic. Effler said he viewed an enhanced data management system as essential to the state's defenses. Annual visitors from Asia, where the H5N1 variant of avian flu continues to spread, far outnumber Hawaii's population of 1.2 million, "making us a small swimming pool with a huge flush rate," Effler said, and putting the state on the front lines of any pandemic.