Latest study: Pfizer’s new crown vaccine has an effective rate of infection prevention reduced to 47% 5 months after vaccination

Securities Times e company news, a new study published by the British “Lancet” shows that 5 months after vaccination with two doses of Pfizer vaccine, the effective rate of preventing infection with the new crown virus dropped to 47%. Researchers analyzed the electronic health records of 3,436,957 Pfizer vaccinators between December 2020 and August 2021. The results showed that after two doses of Pfizer vaccine, the effective rate of preventing infection with the new crown virus was 88% in the first month, and fell to 47% after 5 months; in terms of preventing the delta mutant virus, the effective rate after complete vaccination was in the first month. It was 93% in one month and fell to 53% after 4 months. (CCTV News)