A positive test doesn’t always equate to an active infection. PCR tests are designed to detect the presence or lack thereof of viral particles. It does not mean that the virus is either multiplying or shedding. It just means the virus is present. It could even be dead viral particles that the immune system has taken out.
The fact that either unvaccinated or single dose vaccinated people are making up the vast majority of cases points toward two doses providing sterilising immunity. However, we just won’t know for sure until an adequate amount of people have received two doses.
And once again, new cases simply DO NOT have the same impact as they once did. With both the first and second waves, meteoric rises in cases such as we’re seeing now would have the country in strict lockdown. Yet, we’re hearing of ALL restrictions being abandoned within the next two months. Why do you think that is?
New cases are far less relevant when upwards of 90% of them experience either mild illness or nothing at all. The remaining 10% might have worse symptoms, even spend a day or two in hospital, but the threat of hospital wards stacked full of poor souls fighting for breath will be reduced to the point of being far less likely than a slightly rough flu season.