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4 de mayo de 2024
prometedora
La vacuna estadounidense tiene inmunidad "robusta", según ensayo en monos miércoles 29 de julio de 2020 18:56 Avanza la vacuna del laboratorio Moderna
La vacuna contra la COVID-19 desarrollada por Moderna y el Gobierno estadounidense induce una "robusta respuesta inmunológica" sin efectos adversos, según un estudio publicado este martes por el New England Journal of Medicine y realizado a primates.
Las conclusiones positivas se suman a las ya publicadas en la misma revista científica hace dos semanas sobre la fase 1 de ensayos clínicos en humanos, que de manera preliminar también mostraban una repuesta inmunológica favorable.
Los monos fueron expuestos al nuevo coronavirus causante de la COVID-19 a las cuatro semanas de haber sido vacunados y la mayoría no desarrolló una infección en los pulmones y ninguno la desarrolló en las vías respiratorias superiores.
Según indicaron en un comunicado los Institutos Nacionales de Salud (NIH), "esta es la primera vez que una vacuna experimental de COVID-19 probada en no humanos ha mostrado un control tan rápido de las vías respiratorias superiores".
La respuesta registrada en los primates es especialmente favorable, ya que al reducir la carga viral tanto en pulmones como en fosas nasales se minimiza la posibilidad de transmisión por vía aérea. Moderna comenzó este lunes la fase 3, la final, de pruebas clínicas en humanos para demostrar la efectividad de la vacuna con pruebas en un grupo de 30.000 personas.
Las primeras conclusiones sobre si la vacuna es apta para su producción en masa podrían llegar en unos tres meses y supondrían un récord en el desarrollo de una vacuna exitosa en tan poco tiempo. Moderna cuenta con financiación y apoyo del Gobierno estadounidense para el desarrollo express de esta vacuna, hasta el momento la más prometedora de las que se están haciendo con ayuda estadounidense. EFE