Las empresas farmacéuticas Pfizer y BioNTech anunciaron hoy el comienzo de una prueba clínica de una vacuna modificada contra la COVID-19 que podría proteger contra la variante ómicron del coronavirus.
El comunicado de las firmas indica que se esperan que los resultados iniciales del estudio, que incluirá a mil 420 voluntarios con edades entre 18 y 55 años, estén disponibles en la primera mitad de este año.
«Seguimos manteniendo un diálogo abierto con las autoridades sanitarias acerca de una vacuna actualizada y datos continuos de la vacuna disponible actualmente, incluido lo que las autoridades requieran», señaló Pfizer en un mensaje, reseña EFE.
Hasta el momento no se ha determinado claramente qué información requerirían las autoridades como la Dirección de Alimentos y medicamentos (FDA) para aprobar una vacuna específica contra la variante ómicron.
Según el informe de las empresas, los voluntarios serán separados en tres grupos: personas con vacunación completa, personas que han recibido vacunación completa y refuerzo, y personas que no están vacunadas, lo cual determinará si reciben una, dos o tres dosis de la vacuna modificada.
Los Centros de Control y Prevención de Enfermedades (CDC, en inglés) informaron el viernes pasado los resultados de investigaciones más recientes que muestran que una inyección de refuerzo de las vacunas ya existentes da una protección contra la enfermedad más grave de ómicron, la variante que causa prácticamente todos los nuevos casos en Estados Unidos.
Estados Unidos es el país del mundo más golpeado por la pandemia con más de 70 millones de casos y más de 865 mil fallecidos.
Por: Agencia
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