The differential diagnosis tool for infectious diseases. Trusted by doctors.

For over 30 years, GIDEON has helped clinicians and public health experts make faster, more accurate decisions with powerful diagnostic tools and treatment guidance.

Whether you’re working through a differential diagnosis or choosing treatment protocols, we provide the infectious disease data you need to save lives and protect communities.

30+ years of excellence

370+

Infectious diseases

2,000+

Bacteria and Mycobacteria

250+

Fungi

460+

Parasites

150+

Viruses

150+

Yeasts

Trusted by doctors and leading universities worldwide

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Built by experts for infectious disease diagnosis

Unlike generic symptom checkers, GIDEON combines specialized infectious disease expertise with robust pathogen, outbreak, drug, and vaccine databases to deliver accurate, actionable diagnoses at the point of care.

Optimized for real-world diagnoses
Optimized for real-world diagnoses

Input presenting symptoms, clinical findings, and patient travel history to generate ranked differential diagnoses (DDx) with geographically sensitive disease probabilities. Compare diseases side by side, check drug interactions, and access treatment guidelines. GIDEON is built for busy clinical workflows.

Treatment decision support
Treatment decision support

Access data on 350+ anti-infective drugs and 100+ vaccines. Searchable by class, spectrum, toxicity, and interactions. Review toxicity forms and contraindications to guide safe treatment choices. Compare options, download references, and share findings with peers.

Comprehensive pathogen database
Comprehensive pathogen database

GIDEON’s dataset includes detailed clinical presentations for 370+ diseases and thousands of pathogens. The diagnosis module includes clinical findings to help identify bacterial, parasitic, fungal, and viral infections.

Stay updated on disease outbreaks
Stay updated on disease outbreaks

Gain infectious disease and outbreak intelligence. GIDEON offers disease outbreak and prevalence maps for 240+ countries and regions. Train medical students, nursing professionals, and microbiology students using interactive real-world data.

Get ahead of complex case diagnosis and treatment with GIDEON

Using GIDEON, I was able to start antibiotic therapy 2 days before the lab results confirmed the diagnosis, speeding up recovery for the family of 5.

Erwin Ho, MD and Clinical Microbiologist
BRIANT-HOST Network, Belgium

GIDEON has been very useful to quantify risk and provide evidence and data for clinical suspicions.

Dr. Jeffrey Jones, MD, MPH
Occupational and Travel Medicine
Indianapolis Travel Clinic
Educator at Franciscan Family Medicine Residency training program

Why doctors choose GIDEON

  • Built for infectious diseases vs. generic tools
  • Clinically validated vs. unproven solutions
  • Interactive hypothesis testing vs. static symptom lists
  • Integrated treatment, drug, and vaccine data vs. diagnosis-only focus
  • Travel medicine integration vs. location-agnostic results
  • Daily updates by ID experts vs. periodic content reviews
  • 30+ years track record

Elevate your clinical decision-making with GIDEON

Join thousands of organizations using GIDEON as their preferred differential diagnosis tool.