Your preventive care, planned in seconds

Tell ZettaHealth about yourself in your own words. You get the screenings and vaccines due now and later, each with its evidence grade and source.

Not medical advice. This tool gives general information from public guidelines (WHO, MoHP Nepal, USPSTF, CDC, NHS). It does not diagnose. Talk to a qualified health worker before any test or vaccine. In an emergency call 102.

How your data is protected

What you type is encrypted in your browser (ECDH P-256, HKDF-SHA256, AES-256-GCM) and can only be opened by our preventive care service. Web servers, proxies and logs in between see ciphertext only.
The service has to decrypt your details to compute the plan, so this is end to end encryption to our service, not zero knowledge. The plan is computed in memory and is never stored or logged.
The service key is signed, and this page checks that signature against a key built into the page before sending anything. Old or replayed messages are rejected.