For those who are negative in everything, please let other go ahead for their vaccination.

https://www.notarise.gov.sg/

1. What is Notαrise?
"Notαrise"1 is a portal for travellers to submit their Pre-Departure Test (“PDT”) HealthCerts for digital authentication and endorsement by the Ministry of Health (MOH) or be issued their Vaccination HealthCerts for travel. Such digital certificates are designed to be easily shared by travellers to facilitate inspection and verification by the relevant local as well as overseas border authorities.