Sanofi Pasteur, the vaccines division of Sanofi announced today that the US Food and Drug Administration has approved the supplemental biologics license application (sBLA) for licensure of its four-strain influenza vaccine, Fluzone Quadrivalent vaccine.

Respiratory syncytial virus (RSV) is a very common virus that leads to mild, cold-like symptoms in adults and older healthy children. But it can be far more serious in infants and toddlers, especially those in certain high-risk groups.