@StealthPolarBear
Yes they did actually say they'd quarantined. So I wonder how it spread.
They don't know that it did spread, the surge testing is a precaution only.
Person got flight, isolated, got poorly and had home PCR test sent, struggled to register it but carried on isolating. Got better. Heard on news details that suggested it could be them, called up and asked.
I think a backup home test registration process by phone would be useful. Beyond that, what exactly do you think anyone did wrong here?