Fred99:
They won't be able to sequence fragments to link that positive to known cases that left MIQ or from the fishing boats.
As I understand from the stuff article, it's not two samples testing positive, it's one sample tested twice to check if the first may have been a false positive.
No, its two samples
"Media release
23 July 2021
Earlier today ESR reported there had been a positive test result detected from a wastewater sample in New Plymouth. A follow-up sample, taken yesterday, returned a second positive result this evening."
https://www.health.govt.nz/news-media/media-releases/covid-19-detected-new-plymouth-wastewater