Le vaccin de Moderna semble efficace contre les variants — Coronavirus

25 Janvier, 2021, 18:32 | Auteur: Anatole Charbonneau
  • Covid-19 Moderna affirme que son vaccin est efficace contre les variants britannique et sud-africain

Les résultats des premiers essais cliniques sur les vaccins concernés, baptisés V590 et V591, ont montré que " la réponse immunitaire (des personnes à qui ils avaient été administrés, NDLR) était inférieure à celle provoquée par une infection naturelle et à celle rapportée pour les autres vaccins " contre la COVID-19, explique la société dans un communiqué.

Pour le concevoir et le distribuer, l'institut de recherche français s'était allié au laboratoire pharmaceutique MSD (nom du groupe américain Merck hors des Etats-Unis et du Canada).

Un technicien de laboratoire travaille sur le séquençage du génome du virus SARS-CoV-2 et de ses variantes au Centre National de Référence des virus des infections respiratoires de l'Institut Pasteur, à Paris, le 21 janvier 2021.

Le laboratoire américain Moderna a affirmé lundi que son vaccin à base d'ARN messager contre le Covid-19 suscitait, dans des études en laboratoire, la production d'anticorps contre les variants du coronavirus identifiés initialement au Royaume-Uni et en Afrique du Sud.

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Merck prévoit en revanche de continuer ses recherches sur deux traitements contre le nouveau coronavirus. Les essais de phase 1 (le premier stade des essais sur l'humain) avaient commencé en août dernier. Pasteur a précisé qu'il poursuivait ses travaux sur d'autres projets de vaccin contre le Covid, à un stade toutefois préliminaire.

"Le premier, administrable par voie nasale, est développé avec la société de biotechnologie TheraVectys, issue de l'Institut Pasteur et spécialisée dans la mise au point de vaccins".

Ces deux projets "sont aujourd'hui en phase préclinique", c'est-à-dire qu'aucun essai n'a encore été mené sur des humains. Selon l'Institut, des recherches sont en cours pour utiliser cette technologie contre d'autres maladies infectieuses (fièvre de Lassa, chikungunya).

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