Sanofi-GlaxoSmithKline's experimental Covid vaccine fails in some older patients

Instead, the companies said they planned to test a modified version of their vaccine in a smaller trial beginning in February. Rather than compare their candidate with a placebo, they said, it could be tested against a vaccine expected to be authorized by regulators for emergency use soon.
Source: The Economic Times Healthcare and Biotech News - Category: Pharmaceuticals Source Type: news