Sanofi researches, develops, manufactures and markets therapeutic solutions in immunology and inflammation, rare diseases, neurology and oncology, along with vaccines including paediatric poliomyelitis, pertussis and Hib vaccines, respiratory syncytial virus protection, hepatitis A, typhoid, yellow fever and rabies vaccines, and Fluzone flu vaccine. It partners with Regeneron on Dupixent and has a manufacturing facility in Germany.