As the Epidemic changes, The prevention of Wuhan pneumonia (novel coronavirus disease, COVID-19) Variant virus has become a key task in the prevention of the epidemic in various countries. The UK, South African and Brazilian variants are currently ranked as the three major international variants, with the Brazilian variant having spread to more than 20 countries. The latest study found that the infectious power of the Brazilian variant of the virus may be 2.2 times higher than the original strain of the virus, and more than 60% of those who recovered were re-infected, while weakening the performance of the vaccine to suppress the virus.
The Brazilian variant, officially named “P.1”, has the N501Y, E484K and K417T mutations, as well as some minor mutations, and may have increased transmission because it contains the N501Y mutation as the British and South African variants, and the E484K mutation as the South African variant, which may affect vaccine protection.
According to a new model study conducted by Brazilian and British researchers, the infectivity of the mutant strain “P.1” found in Brazil’s Manaus region (Manaus) may be 1.4 to 2.2 times higher than that of the original strain, while causing 25% to 61% of recovered patients to The study’s preprint found that
Preprints of the study found that the “P.1” strain was associated with a surge in cases of Manaus, the second wave of the epidemic in Brazil late last year, a finding that could explain the outbreak of the second wave of the epidemic even though the community had a high level of immunity after the first wave.
In this study, eight vaccine recipients of the Kexing vaccine were analyzed for their antibody response to the “P.1” variant virus. The study found that the antibodies did not perform as well as other types of viruses in suppressing the “P.1” variant.
The authors of the study, which has not yet been published in a scientific journal, emphasize that they based their results on cellular analysis and that the laboratory findings do not necessarily correspond to the situation in the real environment, and that they are just beginning to understand the “P.1” variant virus.
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