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CDC Alert: Shortages of Yellow Fever Vaccine in the U. S. https://www.cdc.gov/mmwr/volumes/66/wr/mm6629a4.htm Sanofi Pasteur, the manufacturer of the only yellow fever vaccine (YF-VAX) licensed in the United States, has announced that their stock of YF-VAX is totally depleted as of July 24, 2017.