Moderna 2026年4月20日 Sanofi touts tolerability of COVID shot Nuvaxovid in head-to-head trial vs. Moderna's mNEXSPIKE - Fierce Pharma Sanofi touts tolerability of COVID shot Nuvaxovid in head-to-head trial vs. Moderna's mNEXSPIKE - Fierce Pharma 原文