For COVID-19 cases by vaccination status, vaccination status is limited to Health Canada approved vaccines.
Rate per 100,000 (7-day average) is the average rate of COVID-19 cases per 100,000 for each vaccination status for the previous 7 days as noted.
Rate of COVID-19 cases per 100,000 is calculated by dividing the number of cases for a vaccination status, by the total number of people with the same vaccination status, and then multiplying by 100,000.
The rate for Unknown vaccination status cannot be calculated.
It is possible that the vaccine protection against symptomatic illness may wane first among older people, who were also the first to be vaccinated.
However, as we explained in detail in our previous article, there are essentially two reasons why this data cannot be used to compare outcomes between vaccinated and unvaccinated people.
The first is that we don’t know how many unvaccinated people there are. For this, we would need to know the actual populations of each age group in England, and then subtract the vaccinated people from them.
In its surveillance reports, PHE (and now the UK Health Security Agency, UKHSA) uses population estimates from the National Immunisation Management System (NIMS), which are higher for the older age groups than population estimates from the Office for National Statistics. This may make Covid case rates look much lower among unvaccinated people than they really are.
The second problem is that vaccinated and unvaccinated people might also differ in other ways which could affect their chance of catching Covid. For instance, vaccinated people might feel they are less likely to catch Covid, and therefore take more risks of being exposed to it.
If so, this could make vaccinated people more “likely” to catch Covid, even though the vaccine itself is substantially protecting them.
为节省打字，我这里就用加拿大的数据实例来说明了，详细的可以去看https://covid-19.ontario.ca/data/case-numbers-and-spread#case_numbers_and_spread
加拿大的数据分不同年龄的只有去年的数据，下面只例出一张全部年龄的感染率比较图形，其实跟英国的也差不多，即Omicron爆发后完全疫苗接种者的感染率高于未打疫苗的感染率。特别给SwiperTheFox看的是里面的数据说明：
About this data
For COVID-19 cases by vaccination status, vaccination status is limited to Health Canada approved vaccines.
Rate per 100,000 (7-day average) is the average rate of COVID-19 cases per 100,000 for each vaccination status for the previous 7 days as noted.
Rate of COVID-19 cases per 100,000 is calculated by dividing the number of cases for a vaccination status, by the total number of people with the same vaccination status, and then multiplying by 100,000.
The rate for Unknown vaccination status cannot be calculated.
这是我正在看的文章； 还没具体看明白。
https://fullfact.org/health/joe-rogan-alex-berenson-covid-vaccines-phe/#:~:text=However%2C%20as%20we,substantially%20protecting%20them.
Why Mr Berenson was wrongIt is possible that the vaccine protection against symptomatic illness may wane first among older people, who were also the first to be vaccinated.
However, as we explained in detail in our previous article, there are essentially two reasons why this data cannot be used to compare outcomes between vaccinated and unvaccinated people.
The first is that we don’t know how many unvaccinated people there are. For this, we would need to know the actual populations of each age group in England, and then subtract the vaccinated people from them.
And with vaccination rates often around 90% or higher in older age groups, the population numbers have to be very accurate, or they can skew the infection rates substantially.
In its surveillance reports, PHE (and now the UK Health Security Agency, UKHSA) uses population estimates from the National Immunisation Management System (NIMS), which are higher for the older age groups than population estimates from the Office for National Statistics. This may make Covid case rates look much lower among unvaccinated people than they really are.
The second problem is that vaccinated and unvaccinated people might also differ in other ways which could affect their chance of catching Covid. For instance, vaccinated people might feel they are less likely to catch Covid, and therefore take more risks of being exposed to it.
If so, this could make vaccinated people more “likely” to catch Covid, even though the vaccine itself is substantially protecting them.
你要是选择年龄段，没有一个是疫苗多的，可为啥全年龄段的就多了呢？
因为能控制谁能得到检测会不太准
同意楼主的结论，疫苗无法防止 Omicron 的感染传播。