Medical researchers struggle to find diverse, qualified participants for vaccine trials, while many willing volunteers don't know how to participate.
Build a matching platform where users create health profiles and get alerts about trials matching their demographics/location. Researchers pay for access to qualified candidates.
Start simple with location-based alerts for major trials before adding full profile matching. Focus initially on countries with many trials but disorganized recruitment.
Regulatory compliance around medical data and participant safety would be the major hurdle requiring legal guidance.