Contigo.care

A compassionate and expert AI agent that digitally supports newly diagnosed HIV patients, reducing anxiety and improving treatment adherence.

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Inspiration

Every year, thousands of people are newly diagnosed with HIV — and many of them face the diagnosis alone, with fear, stigma, and little emotional or medical guidance. Searching online often leads to unreliable answers: tools like ChatGPT can “hallucinate” or provide information from non-official sources, which only increases confusion and anxiety. We wanted to change that by building a trusted, compassionate digital companion.

What it does

Contigo.care is an AI-powered agent that supports patients in the first critical month after an HIV diagnosis.

  • Provides reliable, verified medical information instead of misinformation.
  • Offers emotional support, detecting signs of anxiety or depression.
  • Sends personalized reminders for medication and appointments.
  • Connects patients securely with psychologists and doctors when needed. It’s like a Buddy + Copilot for health, combining empathy, accuracy, and professional oversight.

How we built it

We used AWS to design an AI agent that is both functional and scalable:

  • Amazon Bedrock for conversational AI (ContigoBot).
  • Amazon Comprehend Medical to detect emotional and clinical signals in text.
  • AWS Lambda + DynamoDB for workflow orchestration and patient state management.
  • Amazon SNS / Pinpoint for notifications and reminders.
  • Amazon Cognito for secure authentication and GDPR-compliant data protection.
  • The frontend is a lightweight web/mobile app where patients interact with the agent.

Challenges we ran into

  • Ensuring empathy + clinical accuracy in the AI’s responses.
  • Designing with data privacy and security at the center (sensitive health data).
  • Creating a workflow that complements doctors instead of replacing them.
  • Reducing the vision of a full digital health ecosystem into an MVP functional enough for this hackathon.

Accomplishments that we're proud of

  • Built an MVP of an AI agent that does not hallucinate, grounded in verified data sources.
  • Designed a solution that empowers patients while reducing hospital burden.
  • Created a prototype that is technically feasible and socially impactful.
  • Showed how AI can make the healthcare system more humane, not less.

What we learned

  • Patients need trustworthy AI companions, not generic chatbots.
  • Emotional health is as critical as physical health in treatment adherence.
  • Building with AWS makes it possible to combine AI, data, and security at scale.
  • A strong storytelling + technical design is key to convincing both hospitals and judges.

What's next for Contigo.care

  • Pilot at Hospital La Paz (Madrid) with 100 patients to measure real-world impact.
  • Expand across Spanish hospitals and integrate with national healthcare systems.
  • Add modules for family education, prevention, and sexual health awareness.
  • Scale into a national digital ecosystem for HIV, combining patients, professionals, and institutions.

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