"The data in GIDEON are derived from all peer-reviewed journals in the fields of infectious diseases, pediatrics, internal medicine, tropical medicine, travel medicine, antimicrobial pharmacology, and clinical microbiology; a monthly electronic literature search based on all relevant terms in GIDEON (e.g., diseases, drugs, etc.) all available health ministry reports (both printed and electronic); standard texts; and abstracts of major meetings."

1. Diagnosis: GIDEON's diagnostic module enables the user to access all epidemiological parameters, clinical hints, diagnostic tests and optimal therapy. It involves data on conditions totally unfamiliar to most physicians outside the involved countries. After specifying the suspected country of disease, acquisition and entering the signs and symptoms of the patient, GIDEON provides a ranked list of differential diagnosis. For each disease on this list the user can retrieve important facts like its clinical and epidemiological profile, its status in the country, etc. By interacting further with GIDEON, the user can explore alternative diagnosis.
2. Epidemiological Module: With GIDEONS Epidemiological Module the user can retrieve a diseases epidemiological parameters, access the status of any disease in the current country, get a list of the world wide distribution, review the status of the current disease in any country and the possibility to access a list of alternative names for a disease. The user can select a pathogen group, reservoir, vector, vehicle and/or country and list all of the diseases that fit these parameters, and he can review the status of global impact diseases like malaria, Aids, Yellow Fever, Cholera and Tuberculosis.
3. Therapy Module: This module provides detailed information about choices in drug therapy, including susceptibility, toxicity and drug interaction data, not only on familiar antimicrobials, but also on ones rarely used. A list with synonyms is included of all commercially available antimicrobials worldwide. Vaccine and Immune Globulin information is similarly available.
4. Microbiology Module: For purpose of identification and characterization, the Microbiology Module provides full laboratory characteristics including biochemical test results and cultural characteristics, for almost 900 organisms. With this Module, the user can identify and compare organisms through an encyclopedia of information all in one integrated source. "