Dr. Lesley Bramford, Acting Director: Child, Youth, and School Health at the Department of Health shares more. on the  Electronic Vaccine Data System Self- Registration Portal. The system can capture the relevant metrics of all South Africans that will be vaccinated; ensure those vaccinated are contactable and alerted to optimize adherence to the regimen. And complete the certification process such that vaccine certificates are easy to obtain for vaccines and authorities that may require the certification.