Covid-19 roundup: Pfiz­er, Mer­ck start late-stage tri­als for Covid-19 pills; Mer­ck be­gins PhI­II study on post-ex­po­sure treat­ment

Phar­ma gi­ants Pfiz­er and Mer­ck an­nounced to­day that they are mov­ing for­ward with Phase II and III clin­i­cal tri­als for an­tivi­ral treat­ments against Covid-19 …

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