technology
World-class medical inference engine
At Infermedica, we aim to connect people with the medical services they need. This is possible thanks to our AI‑powered inference engine that precisely analyzes patients' symptoms.

HOW IT WORKS
AI-led medical interview
Infermedica’s technology draws conclusions from patient data to construct dynamic medical interviews on the fly. Our AI asks the right questions to gather supplementary health information, better understand patients' state of health, and give appropriate recommendations. The process consists primarily of the following:
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The patient interview starts with gathering initial symptoms, risk factors, and demographic data. Additional input regarding the symptoms' occurrence or severity makes the engine even more precise.
- The engine is backed with a comprehensive library of thousands of medical conditions
- It covers multiple medical specialties, including pediatrics
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The inference engine uses initial evidence to construct a dynamic interview based on probabilistic models and reasoning techniques. It was developed by our data scientists, who collaborated closely with medical experts.
- Algorithms follow the rules of differential diagnosis that physicians use to interview the patient
- The engine verifies various conditions at once and is more effective than a fixed rule-based system
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Infermedica’s AI knows exactly when to stop asking questions. The inference engine observes correlations between patients’ symptoms and hundreds of diseases. With every answer from the user, it becomes more confident about the most probable conditions.
- It’s one of the shortest pre-interviews on the market
- Questions are generated dynamically during the interview
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Finally, the inference engine presents the most probable causes of the symptoms, which are paired with the suggested level of care. Combined with the answers of the intelligent interview, recommendations are individual to each situation.
- Our triage recommendations are based on a 5-level scale (self-care, consultation, consultation 24h, emergency, ambulance)
- We provide recommendations for the level of care, type of medical specialist, communication channels, and more

Our engine’s abilities

Complexity
The inference engine is able to analyze numerous symptoms, conditions, risk factors, and demographics at once.

Adaptability
Small bits of evidence can make a big difference. Our engine adapts as it learns about patients’ complaints.

Instant results
Our engine can investigate multiple conditions in real time and provide recommendations in a matter of minutes.

Dynamic logic
Our AI asks fully dynamic questions—there is no fixed logic or prescribed path.

Blazing speed
It accelerates to reach high performance with an unmatched query response time of ~0.1 s!

Foundations of AI
Continuous improvement

Machine learning
Based on the observation of a powerful database, model data (Supervised ML), and feedback loop, the system identifies patterns, statistical facts, and learns to reach better intelligent outcomes.
- Evidence-based literature
- Feedback loops with clients
- Large anonymized data sets

Probabilistic modeling
Scientists, engineers, and doctors have contributed to our algorithms and probabilistic models. These parts of our engine are based on modified Bayesian networks and machine learning methods.
See how we test engine accuracy
in the series of blog articles →
10+ million
successful health checkups
1+ million
structured patient cases
93%
engine accuracy

KNOWLEDGE BASE
Medical quality ensured by physicians
Thousands of symptoms, risk factors, conditions, and the precise connections between them are sourced and verified by a team of experienced physicians. They use only proven and reliable sources of medical knowledge and follow scientific principles of clinical validation.

2254+
medical concepts
1362+
symptoms
742+
conditions
150+
risk factors
60,000+
hours of physician input
60+
medical experts engaged
Our Medical Knowledge Base is the very foundation of all the solutions we offer. It directly reflects how effective and accurate our recommendations are. It is kept thorough and up to date, by our team of doctors.
PLATFORM FEATURES
Our engine’s extensions
The inference engine lies at the core of Infermedica’s platform. It can be complemented by various components and features that strengthen its symptom-assessing and patient-routing abilities. These elements can be selected and implemented according to a businesses’ unique needs.

Specialist Recommender
Augments patient interviews by recommending a specialist and connects them with your services seamlessly →
Third-person questions
Enables recommendations for family members, friends, or medical experts caring for someone else →
Rationale
Brings transparency and understanding to the users by showing them the reasons behind the AI’s questions →
Explications and instructions
Improves user experience by helping them understand medical concepts and perform basic examinations at home →
Explain
Presents gathered information in a synthesized form to patients or physicians with all evidence for or against a given condition →
Solutions
How to use it
Incorporate our top-notch inference engine and its vast medical knowledge into your businesses’ virtual healthcare product. Check out our ready-to-use features or leverage the flexible API. Use it freely to build custom solutions, create multiple interfaces, scale up, or simply integrate it with your existing systems.
Custom
Infermedica API →READY-TO-USE
Symptom Checker →READY-TO-USE
Call Center Triage →
Let’s discuss your challenges
Complete the form below to connect with our team of experts about implementing digital primary care solutions. Find the right path to reduce costs and improve patients’ experiences using our AI-powered digital platform.