As­traZeneca pub­lish­es Covid-19 vac­cine PhI­II pro­to­cols in lock­step with Mod­er­na and Pfiz­er. How are they dif­fer­ent?

Fol­low­ing in the steps of Mod­er­na and Pfiz­er, the oth­er two Amer­i­can drug­mak­ers cur­rent­ly in Phase III tri­als for their Covid-19 vac­cines, As­traZeneca post­ed its …

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