evidence: Vaccines go through a three-stage clinical trial process that’s required before they are sent to regulatory agencies for approval. Given the urgent need, some vaccine developers compressed the clinical process for SARS-CoV-2 by running trial phases simultaneously. [...] Here are some of the vaccines that have made it to phase three and beyond: [...] Clinical trials: On March 16, Medicago and GlaxoSmithKline announced that their vaccine had entered phase three clinical trials to study its safety and efficacy in up to 30,000 volunteers in 10 countries, including Canada and the U.S.