Tsitsi Eunice Sifiyali is a physiotherapist and public health expert who co-founded VaxiGlobal, a health-tech startup focused on promoting health security by verifying vaccine delivery. She is a 2019 Massachusetts Institute of Technology Solve Finalist in the Health Security Challenge. She is also a winner of the 2020 Zimbabwe Women in Global Health.

Venture: VaxiGlobal is a vaccination verification service where clinicians who administer vaccines for travel or immigration purposes are verified, and in partnership with Simprints, contactless biometrics are used for verified delivery of vaccines. In addition to the WHO immunization card, digital vaccination certificates are created and embedded in biometric data and QR codes scanned at border controls. The system can also be used by international universities and other institutions which require proof of vaccination from their international students.