@KLVeritas - Dr. Kat Lindley
“A fourth dose of the COVID-19 vaccine may not be as effective as expected, according to a recent peer-reviewed study.
The retrospective population-based observational study published in the European Journal of Clinical Investigation used national health data from the Austrian epidemiological reporting system, individual all-cause mortality data from Statistics Austria, and the national COVID-19 vaccine registry.
Researchers calculated COVID-19 deaths and SARS-CoV-2 infections from Nov. 1 to Dec. 31, 2022, in 3,986,312 individuals, comparing the outcomes of 281,291 who received four vaccine doses with 1,545,242 individuals who received three vaccine doses to determine relative efficacy.
During the initial study period, researchers recorded 69 COVID-19 deaths, 89,056 SARS-CoV-2 infections, and an overall case fatality rate of 0.08 percent. Relative vaccine efficacy for four doses was negative 24 percent compared with those who received three vaccine doses. Additionally, researchers found more COVID-19 deaths among individuals who received four vaccine doses than among those who received fewer vaccine doses or no vaccinations.”
