Pfizer/BioNTechs corona vaccine protects 90 percent from hospitalization after full vaccination, according to researchers in a publication in the scientific journal The Lancet. Even after being infected with the Delta variant, the vaccine continues to protect against hospitalization. Protection against contamination decreases considerably over time.
During the first month after the second vaccination, Pfizer protects 88 percent from contracting the virus, only 47 percent after five months. According to the scientists, the research results show that booster doses of the vaccine will be needed to keep protection high. The study ran for about half a year and the effectiveness of the vaccine against hospitalization did not decrease during that period, the researchers said.
According to the scientists, the research proves that the vaccine protects well from hospitalizations, even now that the more contagious Delta variant of the virus is dominant. According to the scientists, the declining effectiveness of the vaccine against infection is likely due to decreasing immunity and not so much because the Delta variant bypasses the vaccines.