https://justthenews.com/politics-policy/health/study-shows-chances-contracting-covid-increase-each-vaccine-dose
A recently published study from the Cleveland Clinic has questioned COVID-19 vaccine efficacy and posited that additional doses may in fact increase one’s likeliness of contracting the disease.
Conducted between September and December of this year, the clinic examined 51,000 of its employees to test the “bivalent” vaccine, created to protect against the original COVID-19 strain and its Omicron variants. It also sought to determine the effectiveness of subsequent vaccine doses. The study has not yet been peer-reviewed.
The survey ultimately discovered an association between higher risk of COVID-19 and those individuals who had previously received a greater number of vaccine doses. The study further determined that the bivalent vaccines were only 30% effective in preventing infection against different variants of the Omicron strain of the virus.
“The association of increased risk of COVID-19 with higher numbers of prior vaccine doses in our study, was unexpected,” the study reads. “A simplistic explanation might be that those who received more doses were more likely to be individuals at higher risk of COVID-19. A small proportion of individuals may have fit this description. However, the majority of subjects in this study were generally young individuals and all were eligible to have received at least 3 doses of vaccine by the study start date, and which they had every opportunity to do.”