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Coronavirus: una nueva variante afecta el Sur de California

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Un grupo de científicos detectó una nueva variante del coronavirus SARS-CoV-2 en el sur del estado de California, en Estados unidos, El equipo comprobó que el 44 por ciento de las muestras que se recogieron y estudiaron en enero correspondían a esa variante.

Los resultados de su investigación aparecen este viernes publicados en la revista Journal of the American Medical Association (JAMA). De acuerdo al informe de los investigadores, las nuevas variantes llegan a convertirse en predominantes a través de un proceso de selección evolutiva que no se conoce bien.

California se convirtió este martes en el estado de Estados Unidos con mayor cantidad de muertes por coronavirus, superando a Nueva York, con un promedio de 433 fallecimientos diarios durante la última semana.

Los científicos señalaron que durante la fase inicial de la pandemia hubo niveles bajos de evolución genética, pero posteriormente la cepa original fue sustituida en muchas regiones del mundo por nuevas variantes que han demostrado mayor eficiencia de la replicación viral en los seres humanos.

Y han corroborado además que los datos conocidos hasta ahora sugieren que las vacunas actuales podrían conservar la capacidad de prevenir muchas hospitalizaciones y muertes, incluso ante la disminución de la eficacia general que se puede producir como consecuencia de las variaciones que se están produciendo.

En la investigación han participado científicos de varios centros de investigación estadounidenses, liderados por Wenjuan Zhang, del Cedars-Sinai Medical Center de Los Angeles, en Califonia.

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