The effectiveness of the Pfizer / BioNTech vaccine against COVID-19 drops to 47% after six months after the second dose. with 88 percent – Reuters Agency reported on Monday, citing the latest research results.
The COVID-19 vaccine from Pfizer – how effective is it?
The analysis of the collected data also showed that the effectiveness of the vaccine in preventing death from infection and the effectiveness of protection against the severe course of COVID-19, requiring hospitalization, remains at a high level of 90%. for a minimum of six months, also in the case of infection with the Delta variant.
Researchers at Pfizer and Kaiser Permanente analyzed electronic medical records of approximately 3,4 million people between December 2020 – when the vaccine became available – and August 2021.
According to specialists, the decrease in the effectiveness of the vaccine is due to the weakening effectiveness of the preparation, and not the greater contagiousness and aggressiveness of subsequent mutations of the coronavirus.
“Our studies of different variants of the virus clearly show that the Pfizer / BioNTech vaccine is effective against all current strains, including Delta,” said Luis Jodar, medical director of Pfizer.
The effectiveness of the preparation against the Delta variant is 93 percent. after the first month, and after four months it drops to 53 percent. In the case of other variants of the coronavirus, the effectiveness of the vaccine drops to 67%. from the initial 97 percent
Do you want to test your COVID-19 immunity after vaccination? Have you been infected and want to check your antibody levels? See the COVID-19 immunity test package, which you will perform at Diagnostics network points.
mnw/ you/ PAP
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