Subramanian and Kumar's study (see graph) showed us all we needed to know: there is NO association between levels of population vaccination and infection/cases burden; NONE

Low vaccination rate-low cases; high vaccination rate-low cases; low vaccination rate-high cases; high vaccinate rate-high cases

What were we seeing as to failure? We had reports from Israel as an example of the effectiveness of the 2 doses of the BNT162b2 (Pfizer-BioNTech) shot to be 39% ( https://www.gov.il/BlobFolder/reports/vaccine-efficacy-safety-follow-up-committee/he/files_publications_corona_two-dose-vaccination-data.pdf) which was significantly less than the trial’s reported efficacy of 96% (https://www.medrxiv.org/content/10.1101/2021.07.28.21261159v1)

https://link.springer.com/article/10.1007/s10654-021-00808-7