Una vacuna desarrollada por Pfizer (Estados Unidos) y BioNTech (Alemania) tiene un 90% de « eficacia » en la prevención de infecciones por Covid-19 según el ensayo de fase 3 a gran escala en curso, el último paso antes de una solicitud de homologación, anunciaron conjuntamente estas empresas.
La protección del paciente se logró siete días después de la segunda de las dos dosis y 28 días después de la primera, según los resultados preliminares.
« Más de ocho meses después del inicio de la peor pandemia en más de un siglo, creemos que este paso representa un paso adelante significativo para el mundo en nuestra batalla contra Covid-19 », dijo el presidente y director ejecutivo de Pfizer, Albert Bourla, en un comunicado.
“El primer conjunto de resultados de nuestro ensayo de la vacuna Fase 3 Covid-19 proporciona una evidencia inicial de la capacidad de nuestra vacuna para prevenir la Covid-19”, agrega.
Según las proyecciones, las empresas dijeron que planean administrar hasta 50 millones de dosis de vacuna a nivel mundial en 2020 y hasta 1.300 millones de dosis en 2021.
En gran parte del mundo, las tasas de infección por Covid-19 se encuentran en niveles récord, las unidades de cuidados intensivos hospitalarios se están llenando y el número de muertos sigue aumentando.
De: H24
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