A photo shows vaccines in prefilled, single-use syringes before the inspection and packaging phase at the French pharmaceutical company Sanofi's world distribution centre in Val de Reuil, France. Pharma giants Sanofi and GSK said on July 29, 2020, that they have agreed to supply Britain with up to 60 million doses of a potential COVID-19 vaccine. The agreement covers a vaccine candidate developed by France's Sanofi in partnership with the UK's GSK and is subject to a "final contract".