The Field Epidemiology Society of Kenya (FESK) launched the ChanjoTrack system on 1st June 2018 in Nyandarua County. The ChanjoTrack system is an integrated birth and immunization register platform that has been developed using USSD technology. Data is therefore collected and managed using all kinds of phones and does not therefore require internet or expensive gadgets to operate. By using the simplest phone (popularly known as mulika mwizi), one can register births, record immunization, query birth registration status and get child vaccination status.

The platform is being piloted in Ndaragwa Subcounty in Nyandarua where 18 health facilities are implementing the system. As at the end of July 2018, more than 1000 children had been registered in the system.

The ChanjoTrack system has been developed using a grant from Bill and Melinda Gates Foundation that was received through the Grand Challenges Explorations (GCE) Round 19.