Sanofi announced the launch of human trials of its second Covid-19 vaccine

French pharmaceutical firm Sanofi announced Friday the launch of human trials of its second Covid-19 vaccine. Sanofi and the US-based company Translate Bio are developing the vaccine based on messenger RNA (mRNA) technology.
Sanofi's Chief Executive Paul Hudson told French newspaper Le Journal du Dimanche last month that the vaccine "will not be ready this year."
The company's first vaccine, developed with GlaxoSmithKline (GSK), is still in the testing phase. Both companies are attempting to revive their development after earlier tests showed in December, a low immune response in older adults.