Coinspeaker Sanofi and GlaxoSmithKline Launch Trials for Their COVID-19 Protein-Based VaccineFrench drugmaker Sanofi and Britain’s GlaxoSmithKline revealed that they had started a clinical trial of their protein-based COVID-19 vaccine candidate, aimed at reaching the final testing stage by December.Sanofi and GlaxoSmithKline Launch Trials for Their COVID-19 Protein-Based Vaccine