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viernes, mayo 3, 2024
InicioInternacionalDescubrieron que hace 20.000 años hubo una epidemia por un coronavirus en...

Descubrieron que hace 20.000 años hubo una epidemia por un coronavirus en Asia Oriental

Hasta diciembre de 2019, los coronavirus habían alcanzado poca atención en la agenda mundial. Hubo epidemias con ese tipo de virus que ahora se llama SARS-COV-1 en 2002 y en 2012 con el MERS. Pero su propagación por el mundo fue controlada y el riesgo de más emergencias por coronavirus dejó de ser una preocupación. Sin embargo, con la pandemia en curso que ya afectó a más de 179 millones de personas en el mundo y produjo más de 3,8 millones de muertes, la investigación científica puso ahora foco en el coronavirus actual y sus variantes, los que aún están en animales y que podrían afectar a los seres humanos, y en el pasado. Porque esos virus existían en el planeta miles de años atrás.

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Un grupo de científicos de Australia y los Estados Unidos descubrió ahora que ocurrió una epidemia de coronavirus en Asia Oriental hace 20.000 años. Encontraron las huellas de esa epidemia al hacer un estudio genómico en la composición genética de los habitantes de esa zona. El trabajo se publicó esta semana en la revistaCurrent Biology.

En los últimos 20 años se produjeron tres brotes de coronavirus graves epidémicos: El SARS-CoV que dio lugar al Síndrome Respiratorio Agudo Severo, originado en China en 2002 y que mató a más de 800 personas. Más adelante, fue el MERS-CoV que dio lugar al Síndrome Respiratorio de Oriente Medio, que mató a más de 850 personas, y el SARS-CoV-2 que dio lugar a la enfermedad COVID-19.

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