Această nouă formulă – denumită mRNA-1273.214 – este un vaccin „bivalent”, adică vizează atât tulpina iniţială a virusului – la fel ca vaccinul administrat în prezent în lume -, cât şi împotriva variantei Omicron.
În urma administrării acestei doze, anticorpii împotriva omicron au crescut de opt ori faţă de nivelul de pornire, potrivit companiei.
„Anticipăm o protecţie prelungită împotriva variantelor îngrijorătoare prin vaccinarea cu (vaccnul) mRNA-1273.214, ceea ce face din el prncipalul candidat la administrarea unui booster în toamna lui 2022”, a declarat CEO-ul Mondena Stéphane Bancel.
El a spus că compania își va transmite datele și analiza preliminară autorităților de reglementare, iar acesta ar putea fi disponibil până la finalul verii.
Efectele secundare ale acestei doze sunt comparabile celei a vaccinului original, iar aceasta a fost bine tolerată de către cei 437 de participanţi la aceste teste, precizează compania, care preconizează să studieze din nou răspunsul imunitar la 91 de zile de la vaccinare.
În aprilie, Moderna a anunțat primul său candidat bivalent de vaccinare de rapel Covid-19 – care a combinat elemente ale vaccinului actual cu actualizări bazate pe varianta Beta – a indus răspunsuri mai mari de anticorpi împotriva tuturor variantelor de îngrijorare, inclusiv Omicron, în comparație cu vaccinul companiei, injecție originală de rapel Covid-19.
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