La producción se ha disparado. En 2020, el año en que se descubrieron las vacunas, sólo se fabricaron 30 millones de dosis, según estimaciones de la empresa británica Airfinity. Este año, la industria espera producir nueve mil 500 millones de dosis en sus fábricas. Se trata de una cantidad enorme: casi el doble del número de vacunas producidas en 2019, es decir, antes de la pandemia. Esto no será suficiente: se necesitan otras dos mil millones de dosis para satisfacer la demanda mundial.
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