STEPHANIE NEBEHAY  ACTIVISTS called on pharmaceutical companies to be transparent about the costs and terms of providing COVID-19 vaccines, saying they must be available and affordable for all. French drugmaker Sanofi and Britain's GlaxoSmithKline said they would supply 200 million doses of their COVID-19 candidate vaccine to the global COVAX vaccine facility backed by the World Health Organization (WHO) and the GAVI vaccine alliance. Medecins Sans Frontieres (Doctors Without Borders) demanded the two companies provide details around price, supply and distribution of any vaccine proven safe and effective. "Pharmaceutical corporations Sanofi and GSK must sell their vaccines at-cost and open…