Sanofi, MedImmune begin shipping flu vaccines

Sanofi ($SNY) and AstraZeneca's ($AZN) biotech unit, MedImmune, have begun shipping vaccines ahead of the fall flu season. In the U.S., MedImmune is only shipping its new quadrivalent vaccine, while Sanofi is offering both three and four-strain influenza shots. Sanofi release | MedImmune release