The fatality rate has increased by 82%. Will these new crown mutant strains become the next Delta?

At present, the new coronavirus mutant strain Delta is sweeping the world, and another mutant strain Lambda has spread to 41 countries and regions.

Beta: More likely to cause severe illness, with the highest degree of immune escape

Recently, Nature published a review article entitled "Remember Beta? New data reveal variant's deadly powers", which aroused people's attention to Beta variants

The Beta (B.

In order to determine whether Beta is related to the increase in severe cases, epidemiologists at Cornell University conducted a study on Beta-infected persons in Qatar and compared Beta and Alpha

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The results of the study show that compared with the Alpha variant, the Beta variant infection causes a 24% higher risk of severe illness, a 49% higher probability of developing to require intensive care, and a 57% higher risk of death

Even with the super spread of Delta variants, Beta variants are now gradually disappearing in many places where it once dominated.

In the previous Phase II clinical trial of Novavax new crown vaccine in South Africa, it seems to have verified this statement.

Iota: The death rate of the elderly will increase by up to 82%

Recently, the research team of the New York Department of Health released the latest study "Epidemiological characteristics of the B.

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B.

Through the establishment of a multivariate model, the study traced the source of the Iota variant

Changes in the transmission and immune escape characteristics of the Iota variant

Fortunately, the WHO responded to this study.

In addition to the above two variants, Gamma (P.

Therefore, the uncertainty of mutated strains makes it particularly important to monitor the SARS-CoV-2 virus diversity, the epidemiological characteristics of new variants, and the severity of the disease.

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