A new study found that vaccinated patients had a significantly higher risk of mortality among hospitalized patients with COVID-19.
Published in Frontiers in Immunology, the study found mortality among vaccinated and unvaccinated patients to be 70 percent and 37 percent and the overall survival rate two times higher in the unvaccinated group.
Researchers measured antibody levels of patients with COVID, comparing the vaccinated and unvaccinated patients to determine whether vaccination protected against COVID-19 and improved outcomes of hospitalized patients.
Among the 23 vaccinated patients, six received three vaccine doses, seven received two doses of Pfizer or Moderna, one received two doses of an unspecified vaccine, two received AstraZeneca, and seven received an incomplete vaccine series. Most patients in the cohort received an mRNA vaccine.
The study found that patients who received every vaccine had higher mortality rates than those who didn’t finish their vaccination series.
“Although the number of patients in this study is limited, these results suggest that among hospitalized patients, prior vaccination may not always be indicative of protection against mortality,” the researchers wrote.
