by Leila MACOR Agence France Presse A key facet of the global mad scramble by Pfizer, Moderna and other pharma groups to develop a viable coronavirus vaccine is the recruitment of tens of thousands of volunteers willing to participate in clinical trials. AFP’s correspondent in Miami, Leila Macor, took part in such a trial organized by US biotech firm Moderna, which announced Monday that its experimental vaccine was nearly 95 percent effective. Why did […]