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¿Primera dosis de AstraZeneca y segunda de Pfizer? La ciencia lo respalda y efectos secundarios son similares

Este es el esquema que Costa Rica utiliza desde hace unos días, e implementará a partir de este lunes 30 de agosto al adelantar segundas dosis pues no habría suficientes AstraZeneca

(FILES) In this file photo a syringe is filled with a first dose of the Pfizer Covid-19 vaccine at a mobile vaccination clinic at the Weingart East Los Angeles YMCA in Los Angeles, California on August 7, 2021. - Covid-19 vaccination efficacy is decreasing over time, US authorities warned on August 18, 2021 as they authorized booster shots for all Americans from September 20 starting eight months after an individual has been fully vaccinated. The move comes as scientists and health experts grapple with how to beat back the surging Delta variant of the coronavirus, and follows extensive debate over whether a third injection of the Pfizer-BioNTech and Moderna vaccines would be appropriate. (Photo by Patrick T. FALLON / AFP)
(FILES) In this file photo a syringe is filled with a first dose of the Pfizer Covid-19 vaccine at a mobile vaccination clinic at the Weingart East Los Angeles YMCA in Los Angeles, California on August 7, 2021. - Covid-19 vaccination efficacy is decreasing over time, US authorities warned on August 18, 2021 as they authorized booster shots for all Americans from September 20 starting eight months after an individual has been fully vaccinated. The move comes as scientists and health experts grapple with how to beat back the surging Delta variant of the coronavirus, and follows extensive debate over whether a third injection of the Pfizer-BioNTech and Moderna vaccines would be appropriate. (Photo by Patrick T. FALLON / AFP) PATRICK T. FALLON
La vacuna de Pfizer & BioNTech se utilizará como segunda dosis en quienes tienen entre 30 y 57 años y recibieron la primera dosis con el producto de AstraZeneca. Fotografia: Patrick Fallon / AFP (PATRICK T. FALLON/AFP)

Las personas entre los 30 y 57 años que recibieron su primera dosis del producto de la farmacéutica AstraZeneca recibirán su segunda dosis con el fármaco del laboratorio Pfizer.

Esto comenzará a hacerse de forma masiva a partir de este lunes 30 de agosto, pero esta mezcla ya se ha aplicado en los últimos días a diferentes personas que llegan a los vacunatorios a completar su esquema.

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