Sanofi Pasteur confirms that YF-VAX® (Yellow Fever Vaccine) is unavailable to order in the U.S. until mid-2018 as the company transitions production to a new state-of-the-art facility, which is expected to occur in 2018. Sanofi Pasteur has worked with the FDA to make another yellow fever vaccine available in the US through an Expanded Access Investigational New Drug Application (IND). Manufactured by Sanofi Pasteur in France, this vaccine, STAMARIL® (Yellow Fever Vaccine [Live]), is registered and distributed in over 70 countries. However, it is considered investigational in the US, as it is not a US-licensed product. The Expanded Access Program has requirements similar to a clinical trial; thus Sanofi Pasteur can support only a limited number of sites. Working closely with the CDC, geographically distributed sites throughout the US were identified for inclusion in the program so patients can have continued access to yellow fever vaccine.