In Florida, a program was the designed for a dengue information for all 67 county health department epidemiologists to be distributed to hospital emergency rooms, clinics, health departments, and infectious disease physicians in the county. Information on case reporting, the dengue case definition, specimen requirements and transport instructions, and a dengue case investigation form is included in the letter of information. There will be a free testing on state laboratory of specimens from patients with suspected dengue were forwarded to the state laboratory for free testing. In cases where specimens were tested at commercial laboratories only, dengue antibody-positive results were forwarded to county health departments and to the state laboratory for inclusion in this study. In Florida, dengue testing is offered only by the state laboratory and some commercial clinical laboratories.