COVID-19: Contact tracing … – Ministry of Health NZ

NZ COVID Tracer contact alerts. Receiving a yellow notification as a result of scanning a QR code through the NZ COVID Tracer app means you may have been exposed to COVID-19. A yellow contact alert will tell you if you are a Casual Contact or a Casual Plus Contact and what to do.

https://www.health.govt.nz/our-work/diseases-and-conditions/covid-19-novel-coronavirus/covid-19-health-advice-public/contact-tracing-covid-19/covid-19-contact-tracing-locations-interest