A recent scientific paper, yet to be peer-reviewed, has examined the association between vaccine breakthrough cases and SARS-CoV-2) variants, base upon a study of the San Francisco Bay area. As the paper says: “Fully vaccinated were more likely than unvaccinated persons to be infected by variants carrying mutations associated with decreased antibody neutralization … Taken together, our results suggest that vaccine breakthrough infections are overrepresented by circulating antibody-resistant SARS-CoV-2 variants, and that symptomatic breakthrough infections may potentially transmit COVID-19 as efficiently as unvaccinated infections, regardless of the infecting lineage.” In other words, the Covid vaccinated may spread Covid as efficiently as the unvaccinated. If I understand this, and this is my interpretation only, it shows that the Covid mandates, such as in totalitarian Victoria, are doomed to fail. The manic drive for mass vaccination may well create an evolutionary force to produce mutant variants of SARS-CoV-2.